发布时间 : 星期一 文章九年级英语知识点更新完毕开始阅读be20e9284b73f242336c5f5b
九年级英语知识点复习归纳总结
UNIT 1
1.—How do you study for a test?—I study it by working with a group.
你是怎样为考试而学习？ 我通过和小组活动来学习。 句中by意为“以（某种方式），通过”。在此表方式，手段。提问行为方式用疑问词how. by是一个介词，接动词要用其ing形式。
eg.I practice my English by speaking it as often as possible.
我通过尽量常说来练习英语。
His father makes a living by selling fruit.他的父亲通过卖水果来谋生。 He improves his maths by doing a lot of maths exercise.
他通过做许多练习来提高他的数学。
They improve their English by watching English movies.
他们通过看英语电影来提高英语。
2.What about reading aloud to practice pronunciation?大声读来练习发音怎么样？ How/What about sth/doing sth?“……怎么样？”about是一个介词，后接动词要用其ing形式。
eg.What/How about taking a walk after dinner? 晚餐后散步怎么样？ What/How about visiting our grandparents this weekend?
这周周末去拜访我们的祖父母怎么样？ 在英语中，介词后接动词只能用ing形式（doing）。be good at doing sth擅长干某事,be interested in doing sth对做……有兴趣,Thanks/Thank you for doing因做……而感谢. eg.His brother is good at playing soccer ball. 他的哥哥擅长踢足球。
Nowaday ,more and more teenagers are interesting in surfing the Internet.
今天，越来越多的青少年对上网感兴趣。
Thank you/Thanks for lending me your bike. 谢谢你把你的自行车借给我。 3.Do you ever practice conversations with friends?你曾经和你的朋友练习对话吗？ Practice sth“练习……”，practice doing sth “练习干某事”。 eg.Let’s practice playing volleyball in our PE claas this afternoon.
让我们今天下午体育课练习大排球。
Do you practice speaking English after class. 你课后练习说英语吗？ 4.We get excited about something and then end up speaking Chinese.
我们对某些事很兴奋，然后却以说中文而结束。
be/get excited about sth“对……感到兴奋”, end up doing sth“以干……而结束”. eg.The students are/get excited about the coming soccer ball match.
这些学生对即将来临的足球比赛很兴奋。
5.Paul forgot a lot of new words. Paul忘记了许多新单词。 forget doing sth“忘记干了某事（已经干了）”。 forget to do sth“忘记要干某事（未干）”。
eg.Sorry,I forgot to tell you the news. 对不起，我忘记告诉你这个消息了。（未告诉） Sorry,I forgot telling you the news.对不起，我忘记告诉过你这个消息了。(已经告诉了） Don’t forget to call me when you get there. 当你到那儿时别忘了给我打电话。 Yesterday afternoon,some students forgot to clean the classroom,so the teacher was a little angry at it this morning.
昨天下午，一些学生忘记打扫教室了，所以今天早晨老师有点生气。 He always forgets to do something. 他总是忘记做某些事。
I forgot asking you the same question before.我忘记以前问过年同样的问题了。 6.First of all,it wasn’t easy for me to understand the teacher.
最初，对我来说听懂老师不容易。
It is/was＋形容词＋ (for sb) ＋to do sth.“对某人来说干某事是……”。在这个结构
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中，it作形式主语，动词不定式作真正主语。
eg.It’s important for us to learn English well. 对我们来说学好英语很重要。 It is exciting for young people to watch a soccer ball match.
对青少年来说看一场√比赛很兴奋。
It was difficult for me to finsh the work alone. 对我来说独自完成这项工作很困难。 It was impossible for them to walk there on time.对他们来说准时步行到那儿不可能。 而在某些表示人的品质的形容词则要用介词of。
即：It is/was＋形容词＋ of sb ＋to do sth. “对某人来说干某事是……”。
eg.It’s very kind of you to help me with my homework.你能帮我做家庭作业真是太好了 It’s polite of you to help the old.对你来说帮助老人是有礼貌的。
7.Also I was afraid to speak in class because I thought my classmates might laugh at me. 我也害怕在课堂上说话，因为我认为他们可能嘲笑我。 be afraid of sb/sth,害怕某人/某物，be afraid of doing sth害怕干某事,be afraid to do sth害怕（不太敢）干某事。
eg.She is afraid of all kinds of animals,such as snakes,spiders,mice and so on.
她害怕各种动物，比如蛇、蜘蛛、老鼠等等。
She is very shy.She is afraid of speaking before strangers.
她很害羞，她害怕在陌生人面前讲话。
Girls are always afraid to go out alone at night.女孩们总是害怕晚上独自外出。 8.Now I am enjoying leaning English and I got an A this term.现在我喜欢学英语并且我这学期获得了一个A。
enjoy doing sth喜欢干某事, like doing sth喜欢干某事,
finish doing sth做完某事, practice doing sth练习干某事, keep doing sth一直干某事, feel like doing想要干某事, mind doing sth介意干某事, be busy doing sth忙着干某事, give up doing sth放弃干某事, stop doing sth停止干某事。 eg.Do you enjoy playing the violin? 你喜欢拉小提琴吗？
My brother used to like surfing the Internet. 我哥哥过去喜欢上网。 They finished cleaningthe classroom at 8 this morning.
他们今天早晨八点钟扫完了教室。
He often practices speaking English after class. 他经常在课后练习说英语。 It kept raining all night. 昨晚一直下雨。
Do you feel like eating anything? 你想吃点什么吗？
--Would you mind taking out the trash? 你介意把垃圾拿出去吗？ --Of course not.But I’m busy doing my homework.
当然不介意，但是我正忙着做作业。
Don’t give up learning English.It’s very useful for you. 不要放弃学英语，对你很有用。 Don’t stop learning English. It’s very useful for you. 不要停止学英语，对你很有用。 9.How do we deal with our problems?What do we do with our problems?
我们是怎样处理我们的难题的。 deal with“处理、应付、对待”，与do with同义。但是deal with常与疑问词how连用，对方式提问；而do with常与疑问词what连用，用来对干什么提问。 eg.How did they deal with the accident?Wat did they do with the accident?
他们是怎样处理这个事故的。
10.By regarding problems as challenges. 通过把困难当作挑战。 regard……as……“把……当作……”。
eg.We regard our teachers as our friends. 我们把我们的老师当作我们的朋友。 11.So I decide to take lots of grammer notes in every class.
因此我决定在每节课上作许多笔记。
decide to do sth=make decisions to do sth=make up one’s mind to do sth. “决定干某事”。
eg.They decided to go on vacation this weekend. 他们决定这周周末去度假。
He decided to visit us next month. 他决定下个月来看我们。 decide not to do sth. “决定不干某事”。
eg.My father decided not to smoke anymore. 我父亲决定不再吸烟了。
David decided not to argue with his parents.大卫决定不和他父母亲争吵了。 12.with the help of our teachers.在老师的帮助下。
with one’s help=with the help of sb. “在……的帮助下”。
eg.With the help of the computers ,we can work better and faster.
在电脑的帮助下，我们能更快更好地工作。 without one’s help.“没有……的帮助”。
eg.I think we can’t finish the work on time without your help.
我想没有你的帮助我们不能按时完成这项工作。
13.unless与 if，它们互为反义词，unless“除非、如果不……”=if……not。都用来引导条件状语从句，在引导条件状语从句时，如果主句是将来时，那么从句就只能用一般现在时表示将来。
eg.We will hold a soccer ball match if it doesn’t rain tomorrow. We will hold a soccer ball match unless it rains tomorrow.
我们要举行一场足球比赛，如果明天不下雨（除非明天下雨）。 He will help us with the work if he has time.
He will help us with the work unless he doesn’t have time.
他将帮助我们这项工作，如果他有时间（除非他没有时间）。 Cindy won’t visit us if we don’t call her. Cindy won’t visit us unless we call her.
辛迪将不来看我们，如果我们不给她打电话（除非我们给她打电话）。
14.angry“生气的、气愤的”。与angry连用的短语有： be angry with=be mad at“生……的气”
eg.He was late for class again.His teacher was very angry with him.他昨天上课又迟到了，他的老师很生他的气。 stay angry“（一直）生气”。
eg.They stayed angry for weeks only about a small problem.
他们为了一个小问题生了几周的气。 be/get angry.“（变得）生气”。
eg.When the teacher saw the dirty classroom,he got angry.
当老师看到这肮脏的教室时，他生气了。
15.I had trouble making complete sentences. 我造完整的句子有困难。 have trouble doing sth,“做某事有困难。”
eg.Do you have any trouble learning English? 你学习英语有困难吗？
I have trouble making complete sentences. 我在造完整的句子上有困难。 16.短语：ask sb for help 向某人寻求帮助, study for a test为考试而学习,
have fun玩得高兴, get excited about对……感到兴奋, end up以……而结束, make a mistake/mistakes犯错误, practice speaking English练习说英语,
not……at all一点也不、根本不……, take notes作笔记, first of all最初、首先, look up查寻、查阅, deal with处理、处臵, be angry with=be mad at生某人的气, try/do one’s best to do sth.尽力干某事, complain about抱怨……， laugh at嘲笑, with the help of在……的帮助下, regard ……as……把……当作……. be afraid to do sth害怕干某事, stay angry生气，
UNIT 2
1.I used to be afraid of the dark. 我过去害怕黑。 a.used to do sth,意为“过去常常……”。仅用于过去时态，没有人称和数的变化。通常用来表示过去的习惯、动作或存在的状态，而现在不再发生了。 eg.He used to smoke too much.Now he has to give it up.
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他过去常常吸许多烟，现在他不得不把烟戒掉。
There used to be a lot of fish in the river,but now there aren’t any.
在这条河里过去有许多鱼。而现在没有了。
They used to play together when they were kids.Now they are working in different cities. 当他们年幼时常常在一起玩，而现在他们在不同的城市工作。
She used to eat lots of chocolates.But now she is too heavy,so she has to stop eating them. 她过去常常吃许多巧克力。但是现在她太胖了，所以她不得不停止吃了。 肯定句式：Sb used to do sth.
否定句式：Sb didn’t use to do sth.或 Sb usedn’t to do sth. 一般疑问句式：Did sb use to do sth? 或Used sb to do sth?
eg.We used to play a lot after school. →We didn’t use to play a lot after school. →Did you use to play a lot after school? —Yes,we did./No,we didn’t. b.be/get used to doing sth,“习惯干某事”。to是一个介词，接动词时要用其ing形式。 eg.We are used to exercising every morning. 我们习惯每天早晨锻炼。
The old man has been used to living alone. 这个老人已经习惯独自居住。 c.be used to do sth=be used for doing sth,“被用来做……”。此结构用来表示一个被动形式。
eg.Stamps are used to send letters.= Stamps are used for sending letters.
邮票是用来寄信的。
Knives are used to cut things.=Knives are used for cutting things.
小刀是用来切东西的。
2.Don’t you remember me?难道你不记得我了吗？
在英语中，否定的一般疑问句常常译作“难道……吗？” eg.Don’t you like ice cream?难道你不喜欢冰淇淋吗？
Don’t you want to go to movies with us?难道你不想和我们一起去看电影吗？ Isn’t he friendly to us?难道他对我们不好吗？
Haven’t you bought a birthday cake for your birthday?Your friends are coming.
难道你还没有为你的生日买个生日蛋糕吗？你的朋友们都要来了。
3.be afraid of 与be terrified of的区别：be afraid of“害怕……、害怕干……”。be afraid of“对……感到恐惧”。比be afrdid of害怕的程度更深。
eg.I used to be afraid of insects,and I used to be terrified of snakes.
我对昆虫很害怕，并且我对蛇感到很恐惧。
4.I go to sleep with my bedroom light on.我总是开着卧室的灯睡觉。
with在句中作伴随状语，表示前面动词的一个伴随状态。可译作“带着，拿着……”，也可不译。
eg.He visited his grandparents with some fruit last weekend.
他上周末带着水果去看望他的祖父母。
His brother went to Beijing with a backpack on his back.
他的哥哥背上背着背包去北京了。
The children listened to the stories there with smiles on their faces.
这些小孩脸上带着微笑在那儿听故事。
5.To do this,she had to work.
To do this,在句中作目的状语，用来表示前一个动作的目的。
eg.We went to Beijing to visit my uncle and aunt. 我们去北京看望我的叔叔阿姨。 Don’t worry,I’ll come to your home to look after your baby.
不要担心，我会到你家帮你照顾婴儿。
Last week,we went to a river to plant trees. 上周他们去河边植树。 6.I don’t worry about my tests. 不要担心我的考试。 worry about sb/sth“为……担心”，与be worried about sb/sth.“担心某人/某物”。但前者表示担忧的动作，后者表示担忧的一个状态。
eg.Mum,don’t worry about my study. 妈妈，不要担心我的学习。
The young woman is worried about her weight. 这个年青妇女担心她的体重。
7.It semms that Yu Mei has changed a lot. 好像余美改变了许多。 It seems/seemed that…….“好像……”。
eg.It seems that it is going to rain. 天好像要下雨了。 It seemed that he got angry. 他好像生气了。
It seems/seemed that…….句型可以与Sb/Sth seem(s)/seemed to do sth.互换，意思一样，“……好像……。”
eg.He seemed to get angry. 他好像生气了。
8.His mother couldn’t afford to pay for her children’s education.
他的母亲不能支付她孩子的教育费用。
can/can’t afford to buy sth.“不能支付……的费用”。
eg.The house is too expensive.We can’t afford to buy it.这个房子太贵了，我们买不起。 9.In the end,she made a difficult decision: to send him to a boy’s boarding school.
最后，她作出了一个艰难的决定：把他送到一个男孩寄宿学校去。
make a decision/decisions＝decide＝make up one’s mind.“决定……”。 in the end=at last.“最后、终于”。
10.To his surprise,this phone call changed his life.
使他吃惊的是，这个电话改变了他的生活。 to one’s surprise,“使某人吃惊的是……。”
eg.He wasn’t good at sports.To our surprise,he did best in the sports meeting.
他不擅长运动。使我们吃惊的是，他在运动会上做得最好。
He was busy these days,but to our surprise,he tried his best to help us.
他这些天很忙，但令我们吃惊的是，他尽力帮助我们。
The problem was very difficult,but to their surprise,David worked it out.
这个问题很困难，但使他们吃惊的是，大卫把他算了出来。
11……he was watching me and would always take pride in everything I do.
他一直在看着你并且会为你做的每一件事而骄傲。 take pride in“对……感到骄傲、自豪”。与be proud of sb/sth同义。但前者表示骄傲的动作，后者表示骄傲的状态。
eg.If you get a good grade,don’t take pride in it. 如果你获得一个好成绩，不要骄傲。 We were proud of what we did. 我们为我们所做的感到骄傲。 be proud to do sth“对干……感到骄傲”。
eg.They were proud to win the soccer ball. 他们对赢得足球比赛感到骄傲。 12.I have tried to make my mother pay more attention to me.
而且时常在试图让妈妈更关注我。
make是一个使役动词，后常用动词原形作宾语补足语。make sb do sth“使得某人干某事”
eg.He didn’t use to like milk,but his mother always made him drink it every morning.
他过去总是不喜欢牛奶，但是他的母亲总是要他每天早晨都要喝。 pay attention to sb/sth“对……关注、注意”。
eg.My parents always pay attention to my study. 我的父母亲总是关注我的学习情况。 13.What his mother said didn’t change Martin’s mind. 他母亲的话没有改变他的想法。
change one’s mind,“改变某人的想法/决定……”。
eg.You haven’t change your mind,have you?你还没有改变你的主意，是吗？
14.He has been working hard and is now one of the best students in the class. 他努力学习，并且是班上最好的学生之一。
one of the 形容词最高级＋名词的复数形式，表示“最……之一”的意思。
eg.China is one of the oldest countries in the world. 中国是世界上最古老的国家之一， Shanghai is one of the biggest cities in China. 上海是中国最大的城市之一，
The Yellow River is one of the longest rivers in China. 黄河是中国最长的河流之一， Newton is one of the greatest scientists in the world.
牛顿是世界上最伟大的科学家之一。
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15.短语： used to do sth过去常常干某事, change one’s mind改变某人的主意. instead of代替, be terrified of对……感到恐惧, go to sleep去睡觉, make a decision/decisions作决定, to one’s surprise使某人吃惊的是, even though即使，尽管, take pride in＝be proud of对……感到骄傲, pay attention to注意, not……any more不再, play the piano弹钢琴, change one’s mind改变某人的主意. no longer不再, give up放弃，
give up doing sth=stop doing sth放弃干某事, be interested in对……感兴趣, can’t afford to buy/pay for不能支付……的费用，买不起……。
UNIT 3
1.Teenagers should be allowed to choose their own clothes. a.allow“允许，准许”，allow sb to do sth, “允许/准许某人干某事”. eg.My parents allow me to watch TV on weekends.
我父母亲允许我在周末看电视。
The teachers don’t allow the students to talk in class.
老师不允许学生在课堂上谈话。
如果allow后面没有宾语，后面的动词只能用－ing形式，而不能用不定式。 My parents don’t allow smoking. 我父母亲不允许吸烟。
Teachers don’t allow talking in class. 老师不允许在课堂上谈话。 b.be allowed to do sth “被允许干某事”。这是一个被动语态的句子。 eg.In the past,women weren’t allowed to take part in the Olympics.
在过去，妇女不被允许参加奥运会。
In the zoos,people aren’t allowed to throw food to the animal.
在动物园，人们不被允许给动物扔食物。
I’m allowed to watch TV on weekends. 我被允许在周末看电视。 c.should be allowed to do sth,“应该被允许干……”，shouldn’t be allowed to do sth“不应该被允许干某事”。这是一个含有情态动词的被动语态的句子，其结构为：请态动词＋be＋动词的过去分词。
eg.The students should be allowed to play sports after school.
学生应该被允许在课后做运动。
Children shouldn’t be allowed to swim in the river alone.
小孩们不应该被允许独自在河里游泳。
Teenagers shouldn’t be allowed to go out on school nights.
青少年不应该被允许在上学的晚上外出。
2.Parents shouldn’t be too strict with teenagers. 父母亲不应该对青少年太严厉。 be strict with sb,“对某人严格要求”，be strict in sth“对某事严格要求”。 eg.Our head teacher is always with us and he is also strict in his job.
我们的班主任对我们总是严格要求，并且对他的工作也要求严格。
3.I don’t think twelve-year-olds should be allowed to get their ears pierced.
我认为12岁的小孩应该不允许穿耳。 a.当主句中的谓语动词是think（想）、suppose（猜想）、believe（相信）等时，如果从句是否定，则要把从句的否定前移到主句，构成I don’t think/suppose/believe…….“我认为/猜测/相信……不……。”即：否定前移。
不能说：I think Jim won’t come to my party.而要说：I don’t think Jim will come to my party. 我想吉姆不会来我的聚会。 b.get/have sth/sb done“让某人干某事”。此结构表示主语不是动作的执行者，而是主语让某人去做，对于宾语来说是被被动。
eg.My hair is too long.I’ll have it cut this afternoon.
我的头发太长了，今天下午我要去把它剪了。（叫理发师把它剪了）。 His bicycle was broken on his way to school.He had to have it repaired.
在上学的路上，他的自行车坏了。他不得不请人修理。（叫别人修理）。
Nowaday ,many parents in the country go to work in the cities and have their
children looked after by the olds.
现在，农村里的许多发明权在城市里打工，并且把他们的孩子托付给老年人照管。
4.You should stop wearing the silly earrings.你应该停止戴那愚蠢的耳环。 a. stop doing sth停止做某事, 指停止正在做的事,
stop to do sth停下来干某事，指停止原来做的事去做另外的事 eg. The students stop talking when the teacher comes in.
当老师进来的时候，学生们都停止说话。
Why did you stop working? 你为什么停止工作？
It’s time for class,boys and girls.please stop to listen to the teacher.
同学们，该上课了。请停下来听老师讲课。
He stopped to have a look at the map. 他停下来看了看地图。 Jim stopped to pick up the wallet. 吉姆停下来捡起了钱包。
b.stop sb/sth (from) doing sth =prevent sb/sth (from) doing sth=keep sb/sth from doing sth. 阻止某人/某物干某事。
eg.The heavy rain stopped us from playing soccer ball outside.
这场大雨阻止我们在外面踢足球。
We must do everything to stop such accidents from happening again.
我们必须做点事情阻止如此的事故再次发生。
His parents stop him from surfing the Internet on school nights.
他的父母亲阻止他在上学的晚上上网。
c.can’t stop doing sth“忍不住……，无法不……”。
I can’t stop laughing when I heard it. 听到那件事，我忍不住大笑。
5.—We have a lot of rules at home.--So do we.我们在家有许多规则。我们也一样。 a.So do we。“我们也一样”是一个倒装句式。倒装句常用来谈论两个人或物同时符合一个情况。
肯定倒装句：so＋be代词、情态动词或助动词/（do、does或did）＋sb。“某人也一样……”。
eg. We had fun in the park yesterday,so did our parents.
我们昨天在公园玩得开心，我们的父母亲也玩得开心。
He has been to that museum many times,so have I.
否定倒装句：neither/either/nor＋be代词、情态动词或助动词/（do、does或did）＋sb。 “某人也一样不……”。
eg.I don’t like coffee, neither does my brother. 我不喜欢咖啡，我的弟弟也不喜欢。 They won’t go to Beijing on vacation,either will I. 他们将不去北京度假，我也不去。 He hasn’t been to the Great Wall before,nor have I. 他没有去过长城，我也没有去过。 b.—It’s cold ,but sunny today.—So it is.今天冷但很晴朗。的确如此。
So it is.是一个陈述句。用于两个人谈论同一件事，其中一个人也同意另一个人的观点。常用于对话中。
eg.—Mary speaks English very well. —So she does.玛丽说英语说得好。的确是这样。 —They will go fishing this afternoon. —So they will.And so will we.
他们今下午要去钓鱼。 他们的确要去。并且我们也要去。 —They went to the movies last night.—So they did,and so did I.
他们昨晚去看了电影。 他们的确去看了电影，并且我也去了。
（ ）—He works very hard. — .And .
A.So does he , so do you B. So he does , so do you C.So he does , so you do D. So does he , so you do
6.be serious about sth/doing sth,“热衷某物/干某事”。
eg.Now,more and more children are serious about playing computer games.
今天，越来越多的小孩热衷于玩电子游戏。
A lot of foreigners are serious about Chinese Beijing Opera.
许多的外国人热衷于中国的京剧。
7. a. It takes(took/will take) sb(常用人称代词的宾格形式)some time to do sth.“花费
4
了某人多少时间干某事”。 It作形式主语，后面的动词不定式（to do）作真正的主语。 b. 相同的表达还有： Sb spend/（spent/will spend） some time (in) doing sth.“某人花费多少时间干某事。”
eg.It took them half a year to build the bridge.
They spent half a year building the bridge. 他们花费了半年时间建这座桥。 8.stay up,“熬夜”。
eg.He stayed up surfing the Internet last night,so he was late for school this morning.
他昨晚熬夜上网，因此今天早晨他上学迟到了。
9.Our teacher believe that if we did that,we would concentrate more on our clothes than our studies.
我们的老师认为，如果我们穿得漂亮，我们就会更多关注衣服而不是学习 concentrate on sth“全神贯注于……”。
eg.He decided to concentrate on physics because he just failed the exam.
他决心专攻物理因为他刚刚考试不及格。
10.……but we learn a lot from each other. 但是我们可以互相学到许多东西。 learn from……“向……学习”。
11.Last year I had an opportunity to volunteer at the local hospital.
去年夏天，我有机会在本地一家医院里进行自愿者活动。 have an opportunity to do sth“有做……的机会”。
12.But sometimes these hobbies can get in the way of schoolwork.
但是这些爱好有时候会阻碍学业。 get in the way (of)……“妨碍、碍事”。
eg.Please don’t get in the way of my study. 请不要妨碍我的学习。 I think the part-time job will get in the way of your study.
我认为这项兼职工作会妨碍你的学习。
13.care about a.“关心”。 b.“在乎、在意”多用于否定句中。
eg.She thinks only about herself,she doesn’t think about other people.
她仅仅考虑她自己，而不考虑别人。
14.表达同意与不同意时要用到:I agree.I disagree.I don’t agree.
eg.—I think students should be allowed to do homework with friends. --I disagree.They talk instead of doing homework. --Sixteen-year-olds should not be allowed to drive. --I agree.They aren’t serious enough at that age.
15.短语： stay up熬夜, concentrate on全神贯注于, at present目前、现在, get in the way of妨碍, care about担心关心, go to (the) movies看电影, get/have……done使得……（被）别人……, take the test later参加补考, be strict with对某人严格要求, be strict in sth 对某事严格要求，
be good for对……有益, have ……off休息、放假， take the test参加考试,。 be serious about热衷于, have a chance of有机会， take a chance抓住机会。
UNIT 4
1.What would you do if you had a million dollars.如果你有一百万美元，你将干什么？ 此句是含有虚拟语气的句子，它表示的是一种不可能实现的假设、愿望、建议想像、猜测或纯粹的空想。也即表示与事实相反的假设。在初中阶段只要求掌握由if引导的条件状语从句和结果状语从句组成的句型所表示的与现在事实或与将来事实相反的虚拟语气的用法。 结构为：（条件从句）If＋主语＋动词过去式，（结果主句）主语＋would＋动词原形。 当条件状语从句的谓语动词是be动词时，均用were。
eg.If I were you,I would call him up.如果我是你，我将给他打电话。（事实上我不是你） If it were Saturday tomorrow,I would go to see my friends there.
如果明天是星期六，我会去那里看我的朋友。（事实上明天不是星期六） If you gave him a present,he would be happy.