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                  8B Unit 2单元系统复习提纲
词汇部分：
1. go on a trip.相当于 have a trip.
   He is going on a trip to Beijing. 他准备去北京旅行。
He is having a trip to Beijing.
2. fun 用名词表示“享乐”、“娱乐”、乐趣“，有趣的人或事、开心的事，fun是不可数名词，因此，其前不可以加不定冠词 a
   It’s fun to play with water. 玩水是件有趣的事。
   Let’s go this way. It’s going to be more fun. 咱们走这边，会更有趣。
   We have a lot of fun at the party. 晚会上我们玩得很开心。
3. take sb out  带某人出去
take sb to the park. 带某人去公园
4. excited/ exciting. 都是形容词， 其中 Excited. 通常修饰人、描述人的感受。 Exciting 通常描述事物（或消息）的特征。
  例如： The film is very exciting. 电影很令人激动。
   We are excited at the news. 我们对这消息感到很激动。
英语中像这样的形容词很多，如：
   Surprised                 interested                 moved                                     
   Surprising                 interesting                moving                          
5.go hiking/ go skiing 去徒步旅行/ 去滑水。
  go skating 去滑冰         go swimming 去游泳     go shopping. 去购物
6.as soon as  一。。。。就。。。。。 
I went shopping as soon as I arrived . 我一到就去购物。
You will see the beautiful view as soon as you get there. 你一到那儿你就看见美丽的风景。
1. so… that… 如此。。。以至于。。。
The problem was so hard that nobody could work it out.
这问题是如此的难以至于没有人能回答出来。
The girl was so tired that she couldn’t walk on.
那女孩是如此的疲劳以至于她不能行走了。
It is so hat that everyone wants to drink water.
天气是如此的热以至于每个人都想喝水。
1． when与while
二个词都可用作从属连词，引导时间状语，意为“当。。。时候“， 当从句中的谓语是延续性动词时，二者可相互替换使用，如果从句动词指一点时间时，即谓语是终止性动词时，只能用when.
① when/ while we were reading, the teacher came in.
②Were you writing when the teacher came in?
 when与 while 二词都可用作并列连词，但意思不同。  when 为“在这（那）时” 等于 and then, and at the time, while则为“而且”，“却”之意 ，表示对比关系。
 ①The children were leaving school when they saw a truck.
 ②He was able to speak English while his father couldn’t.
9.show them to you.把他们给你看。
  Show sb  sth/ show sth to sb
10.be famous as/ for. 以。。。而出名/作为。。。而出名。
  Yao Ming is very famous as an NBA player.姚明作为一个NBA球员而出名。
  Liu Huan is very famous for his songs.刘欢以他的歌而出名。
2. It seemed to be hopeless to try to get inside. 想进取好像没有希望。
He seemed to be very tired.或 It seemed that he was very tired. 他好像很疲劳。
3. 语法：
过去进行时：主要表示过去某个时刻或一阶段正在进行的动作，常和表示过去时间的状语then, at this (that)time, yesterday, at nine, last night.   等连用。
基本句式 陈述句： 主语+ be (was, were)  + 现在分词
She was reading a book at this time yesterday.
昨天的这个时候她正在看书。
When his father got home, he was watching TV.
当他父亲到家时，他正在看电视。
否定句： 主语+was/were +not + 现在分词
I wasn’t doing my homework at this time yesterday.
当他进来时我不在做作业。
When he came in, we were not reading a book.
当他进来时，我们不在看书。
一般疑问句： + 主语+现在分词
特殊疑问句： 疑问词+一般疑问句
Were you reading a newspaper then?
那时你正在看报纸吗？
----- Where were you waiting?  ----I was waiting outside the school gate.
------你在哪里等？          ----我在学校门口等。
过去进行时与一般过去时的区别：
过去进行时表示过去某时或某段时间正在进行的动作，而一般过去时表示过去发生的一个单的事实，也就是说用一般过去时，只是表示有过这件事。用过去进行时则强调了动作的连续性。
Li Ming was writing a letter. 李明在写信。
Li Ming wrote a letter. 李明写过一封信。
The children watched TV last night. 昨晚孩子们看了电视。
The children were watching TV last night. 昨晚孩子们正在看电视。
疑难题导析：
1．_______ when I went into his room?
  A. what does he do                 B. where did he do     
C. where was he doing              D. what was he doing
从“when…..”  时间从句的情景可知，应用进行时态。又如：when he arrived home, his sister was doing her homework. ( 他到家时，他妹妹正在做作业。)因此应选择D。
1． They were walking in the park _____ they heard someone calling them.
 A. when        B. after         C. until        D. before
When在此句中作并列连词用，意为“在那时”。因此答案选A。            

3. The Blacks _______ a the table when I went in.
  A. is sitting         B. were sitting        C. was sitting       D. sat
When从句中用的是一般过去式，按句意思 went 这一动作发生时， the Blacks 正在做。。。。，所以应用过去进行时，由于the Blacks 代表复数，因此选择B。
4. I’ll tell him about it as soon as he _______ here.
 A. comes          B. will come         C. is coming      D. is going to come.
在带有时间状语从句的复合句中，当主句是将来时时，从句要用一般现在时表示“将来”如：If you want to see the play, you’ll have to stand on line.
  如果你们要看这戏就得排队，因此答案选A。