初中英语语法大全

1、 It的用法it在英语语法中属人称代词，意思是“它”，用来指人以外的一切生物和事物。下面就初中英语课本中有关it的用法作一下梳理。1指动物和植物。如：    Oh，that's Lucy's hat噢，那是露茜的帽子。    It looks like a cat！它看上去像只猫！    Where's tea grown？It's grown in the southeast of China    什么地方种植茶？中国东南部种植茶。 2指代一些无生命的东西。如：  &#

2、160; Is it your watch？这是你的手表吗？    Look at the rain！It's heavy，isn't it？看这雨！雨很大，对吗？ 3代替上文提到过的整个事情。如：    Well，you mustn't play on the roadIt's dangerous哦，你不能在公路上玩。这太危险了！    It was hard work，but they really enjoyed it摘苹果是艰苦活，可他们都乐意去干（它）。 二、用于指代人。 1指代说话者心目中不

3、太清楚的那个人，常在打电话或敲门时用。如：    Who was it？是谁（打来的电话）？    Was it Susan？（打电话的）是苏珊吗？    Yes，it was是的，我是。（根据上下句，“it was”也可不译出来。） 再如：Who is knocking at the door？谁在敲门？   It's me是我。 2指说话者心目中的那个人。如：    Is it your sister，Kate？（那旧照片上的 baby）是你姐姐凯特吧？    No！不是。

4、    Is it your brother？是你哥哥吧？    No！不是。    I knowit's you！我知道了，（那）是你。 3指代性别不详的婴幼儿或在不计较性别时，也可用it来指人。如：    The child smiled when it saw its mother这小孩一见到母亲就笑了。    I don't know who it is我不知道他是谁。 注意：看到这样的句子（或听到这样的话）时，要想一想，不要一看到it就把它译成“它”。） 4在回答用指示

5、代词表示人的特殊问句时，常用it指人。如：    Who's that？那人是谁？    Is it Kate？是凯特吗？    Yes，I think you're rightIt's Kate是的，我想你说对了，是凯特。 三、用于指时间、距离和自然现象等。 1表示时间。如：    What time is it？几点钟？    It's ten十点钟。    It's summer in Australia now现在澳大利亚是夏天

6、。 特别注意it用于表示时间时还常见于以下两个句型中： （1） It's time（for sb）to do sthIt's time for sth译为“是（某人）该干的时间了”、“到的时候了”。如： It's time for supperto have supper是吃晚饭的时候了。 I think it's time for us to start the lesson now我想现在是我们开始上课的时候了。 （2）It is has been 时间段since 一般过去时。译为“自从以来已过了（时间）”。此结构可以与另一种句型进行同义句转换。如： It

7、 has been two weeks since we met last Two weeks has passed since we met last自从我们上次相遇以来，两个星期过去了。 It's three years since he came hereIt has been three years since he came hereHe has been here for three years他到这里已经三年了。 2表示距离。如：    It's half an hour's walk from my home to the schoo

8、l从我家到学校步行得花半小时时间。    Where's the farm，Li Lei？Is it far？李雷，农场在哪里？远吗？    No，it's quite near不，（距）离这很近。 3表示自然现象。如：    Sometimes it snows and the land is all white有时下雪，大地一片白。    It is very quiet here at the moment眼下这儿很安静。 四、用作形式主语。 英语中常常见到某个句子以it开头，it与其后面的动

9、词不定式短语、动名词短语、名词性从句等相呼应，以表达一个完整的意义。这是一种习惯表达法，这样的句式可避免句子显得头重脚轻。 1Itiswas形容词（forof sb）动词不定式短语。对于这个句型中究竟用 for还是用of，一般遵循这样的规则：如果形容词仅仅是描述事物的形容词，如：difficult， easy，hard，important，dangerous等用for；如果形容词是描述不定式行为者的性格、品质的，如：kind，good，nice，clever等则用of。如： It is interesting to play with snow in winter冬季里玩雪是很有趣的。 It&

10、#39;s important for us to keep the water clean保持水质清洁对我们来说是很重要的。 It's very kind of you to say so你这样说真是太好了。 注意：这一句式中的形容词位置也可换用名词；连系动词be也可换用其它连系动词，如feel等。如： It's a good habit to get up early and go to bed early早睡早起是好习惯。 It must be great fun to fly to the moon in a spaceship乘宇宙飞船飞往月球一定很有趣。 It fe

11、els strange to have a twin sister有个孪生姐妹感觉很奇怪。 2It will beis was 形容词动名词短语。如：    It's bad playing in the street在街上玩是没好处的。    Is it any good trying again？再试一次有用吗？ 3Itiswas形容词从句。如：    It is certain that he will come他一定会来。    It's true that he may fall behi

12、nd the other students他真的可能落后于其他同学。    It is strange that he should say so他居然这么说，真是奇怪。 4It is was one's turn（duty，pleasure） to do sth意为“该轮到某人做某事（做某事是某人的责任、愉悦的事）”。如：    It's your turn to be on duty tomorrow明天轮到你值日了。 5It takes（sb）some time to do sth意为“（某人）花时间做某事”。如：  &#

13、160; It took me a week to finish reading the book我花了一周时间看完这本书。 6It costcosts sbsome money to do sth译为“某人花多少钱做某事”。如：    It cost me 260 yuan to buy the new watch我买这块新手表花了260元。 7It seems seemed 从句。译为“看起来好像”，此结构可以转换成“seem 动词不定式”形式。如：    It seems that he is illHe seems to be ill看起来他好像

14、病了。 五、用作形式宾语。 当句子的真正宾语是动词不定式、动名词或从句时，为避免句子头重脚轻，须将其放在宾语补足语之后，改用先行词it占据其原来的位置。it用作形式宾语的句型为：主语谓语it宾语补足语动词不定式动名词从句。该句型中宾语补足语可由形容词、名词等充当。如： He found it not easy to learn a foreign language well他发现学好一门外语是不容易的。 We think it no good reading in bed我们认为躺在床上看书无益处。 I think it necessary that we have the meeting我认

15、为开这个会是必要的。跟踪训练： 同义句转换，每空一词。 1It's time for class    It's time _ _  _   2We spent twenty minutes cleaning the room yesterday   It _  _  twenty minutes _  _ the room yesterday 3She seems to be worried now    _  _ t

16、hat she _  worried now 4It's a long time since we met last   We haven't seen each other _  _  同步提高练习：指物的用法。1、Look, our food is gone. Someone must have come here and eaten .A. he B. which C. she D. it2、-Is this a Chinese car?-No, is an English car.A. it B. this C. tha

17、t D. one3、The red pen is on the desk and is Toms.A. this B. which C. one D. it4、Toms mother kept telling him that he should work harder, but didnt help.A. he B. which C. she D. it5、Nothing is wrong with the radio, ?A. isnt it B. is that C. is it D. isnt that6、We cant work out the physics problem. Ca

18、n you tell us ?A. how to do B. what to do it C. how to do it D. what should to do7、Harry Potter is so interesting a book that lots of teenagers like to read .B. it B. this C. that D. one8、-I need something for cutting the paper.-Oh, you want a knife? OK, Ill get for you.A. it B. that C. this D. one9

19、、Money is very important but is not the most important thing.A. this B. that C. it D. one10、Excuse me. I want to buy some stamps. Where can I find a post office?-I know not far from here. You can easily find .A. that ; it B it; one C one; it D. it; this用于指人11. - I rang your home yesterday. A man ans

20、wered but I didnt recognize the voice. - _ must be my brother, Peter. A . It B. She C. He D. That 12. - Who was _？ - Was _ Chris？ A. it, he B. that, that C. that, it D. it, it13.-Who is knocking at the door？ -_ is me A. It B. That C. This D. I 14. -Is _ your brother? -No！ -I see,_ is you！ A. that, i

21、t B. it, it C. it, that D. that, that15. - Look, Mr. Zhao is reading a newspaper. - _ can't him. He has gone to Beijing. A. This B. That C. He D. It 指代时间等【牛刀小试】1、 单项选择( ) 16. What time is _? It's seven.A. thatB. thisC. itD. they( ) 17. _ time for breakfast.A. It's B. That's C. This&#

22、39;sD. Its( ) 18. _ three years since you left home.A. That's B. It'sC. This'sD. It been( ) 19. _ three minutes' walk from my home to school.A. ItsB. There'sC. It's D. Here's( ) 20. _ often snows in Beijing in winter.A. ThatB. ThisC. ItD. Its2、 完成句子21从我们家里到学校要坐20分钟的车。_ _

23、_ from our home to school by bus.22.是时候该上床睡觉了。_ _ _ go to bed.23.自从我来广州后，已经过了7年时间了。_ _ _ _ _ since I came to Guangzhou.24.我想我们是时候出发了。I think _ _ _ _ us to start off.25.从教室到图书馆需要花我半个小时的时间。_ _ _ half an hour from the classroom to the library.26雨下了三个小时没有停。_ _ _ for 3 hours without stopping.27.我第一次来这里。_ _ _ _ to come here.28.今天真是个好天气。_29.从这里到电影院需要走路半个小时