28、run after追逐，追求
If you run after two hares, you will catch neither.
同时追两只兔子，你一只也抓不到。
29、on the air广播
We will be on the air in five minutes.我们五分钟以后开始广播。
This programme comes on the air at the same time every day.
这个节目每天在同一时间播出。
30、think highly/well/much of对……评价很高, 赞赏, 对……印象好
He was highly thought of by the manager.经理对他非常赞赏。
I think well of your suggestion.我觉得你的建议很好。
think badly/nothing/little/lowly of……
认为不好, 好……不在意, 不赞成, 觉得……不怎么样
I don’t think much of him as a teacher.我觉得他作为一个老师不怎么样。
31. leave out 1) 漏掉 You made a mistake—You’ve left out a letter “t”.
你出错了—你漏掉了一个字母t.
2) 删掉, 没用 I haven’t changed or left out a thing.
我没有作出变动也没有删掉任何东西。
32. stare at （由于好奇、激动等张着嘴巴，睁大眼睛地）凝视，盯着看
Don’t stare at foreigners. It’s impolite.不要盯着外国人看，这样不礼貌。
比较：glare at （to stare angrily at）怒视着
这两个小男孩互相怒视着，随时准备开战。
33. make jokes about 就……说笑
They make jokes about my old hat.他们就我的旧帽子说笑我。
have a joke with … about …跟某人开关于某事的玩笑。
He stopped to have a joke with me.他停下来跟我开玩笑。
play a joke on…开某人的玩笑
We played jokes on each other. 我们互相开玩笑。
v. joke about取笑 They joked about my broken English.他们取笑我蹩脚的英.
45.take over 接管；接替；继承
what is good and still useful should be taken over.好的有用的东西应当继承。
Our chairman has left, so Jack will take over (his job).
我们的主席走了，因此杰克将接
管（他的工作）。
46. break down
1) 破坏；拆散
Chemicals in the body break our food down into useful substances.
人体中的化学元素把食物分解成有用的物质。
The peace talks are said to have broken down. (喻)据说和谈破裂了。
2)（机器）损坏 Our truck broke down outside town. 我们的卡车在城外抛锚了。
The car broke down halfway to the destination.汽车在到达目的地的中途抛锚了。
3) 失败；破裂 Their opposition broke down.他们的反对意见打消了。
4) 精神崩溃；失去控制 He broke down and wept. 他不禁失声痛哭。
5) 起化学变化 Food is broken down by chemicals. 化学物质引起食物转化。
47、get on one’s feet
1）站起来;站起来发言
2）(=stand on one's feet)自立, 经济上独立
3）(人)病好了, 可以起床了; (使)恢复, 复苏(指企业)
48、go through
1) 经历；经受；遭到
These countries have gone / been through too many wars.这些国家饱经战火。
2) 完成；做完 I didn't want to go through college.我不想上完大学。
3）通过；批准 The law has gone through Parliament. 议会已经通过了这项法案。
Their plans went through. 他们的计划得到了批准。
4）全面检查；搜查
They went through our luggage at the customs.在海关他们检查了我们的行李。
45.take over 接管；接替；继承
what is good and still useful should be taken over.好的有用的东西应当继承。
Our chairman has left, so Jack will take over (his job).
我们的主席走了，因此杰克将接 管（他的工作）。
46. break down
1) 破坏；拆散
Chemicals in the body break our food down into useful substances.
人体中的化学元素把食物分解成有用的物质。
The peace talks are said to have broken down. (喻)据说和谈破裂了。
2)（机器）损坏 Our truck broke down outside town. 我们的卡车在城外抛锚了。
The car broke down halfway to the destination.汽车在到达目的地的中途抛锚了。
3) 失败；破裂 Their opposition broke down.他们的反对意见打消了。
4) 精神崩溃；失去控制 He broke down and wept. 他不禁失声痛哭。
5) 起化学变化 Food is broken down by chemicals. 化学物质引起食物转化。
47、get on one’s feet
1）站起来;站起来发言
2）(=stand on one's feet)自立, 经济上独立
3）(人)病好了, 可以起床了; (使)恢复, 复苏(指企业)
48、go through
1) 经历；经受；遭到
These countries have gone / been through too many wars.这些国家饱经战火。
2) 完成；做完 I didn't want to go through college.我不想上完大学。
3）通过；批准 The law has gone through Parliament. 议会已经通过了这项法案。
Their plans went through. 他们的计划得到了批准。
4）全面检查；搜查
They went through our luggage at the customs.在海关他们检查了我们的行李。
重点句型
1．“So + be／have／助动词／情态动词＋主词”的结构。此结构中的语序是倒装的，“So”代替上句中的某个成分。如果上面一句是否定句，则使用“Neither/Nor+be/have/助动词/情态动词+主语”的结构。
例如 He’s tired，and so am I．(＝I’ m also tired．)
You can swim，and so can I．(＝I can also swim．)
She has had supper，and so can I．(＝I’ve had lunch，too．)
Tom speaks English，and so does his sister．(＝His sister speaks English，too．)
A: I went to the park yesterday．
B: So did I．(＝I also went to the park yesterday．)
2．“So +主语+be／have／助动词／情态动词”结构中的主谓是正常语序，so相当于indeed,certainly,表示说话人对前面或对方所说情况的肯定、赞同或证实，语气较强，意思是“确实如此”。
例如 A：It was cold yesterday．昨天很冷。
B：So it was．的确如此。(＝Yes，it was．)
A：You seem to like sports．
B：So I do．(＝Yes，I do．)
A：It will be fine tomorrow．
B：So it will．(＝Yes ，it will．)
3．“主语+do/does/did + so”结构指的是按上句的要求做了。此句型中do so代替上文中要求做的事，以免重复。
My Chinese teacher told me to hand in my composition on time and I did so.(=I handed in
my composition on time.) 语文老师叫我按时交作文, 我照办了。
4．So it is with…或 It is the same with…句型表示 “……(的情况)也是如此。”当前面的句子中有几种不同形式的谓语时，要表示相同情况，必须使用本句型， 不能使用so 引起的倒装句。
She doesn’t play the piano, but she likes singing. So it is with my sister.
5、There you are. 行了，好。
这是一句表示一种事情告一段落或有了最终结果的用语。如：
There you are! Then let's have some coffee.
除此之外，还可以表示“瞧，对吧（果然如此）”的语气。例如：
There you are! I knew we should find it at last.
对吧！我就知道我们最终能找到的。
6、have some difficulty (in) doing sth.
干某事有困难；接名词时，常用句型：have some difficulty with sth.
①Do you have any difficulty (in) understanding English?
你理解英语口语有困难吗？
②She said she had some difficulty with pronunciation.
她说她在发音方面有困难。
7、have a good knowledge of sth.
“掌握……”，“对……有某种程度的了解”
①He has a good knowledge of London.
他对伦敦有所了解。
②A good knowledge of languages is always useful.
8、Tree after tree went own, cut down by the water, which must have been three metres deep.
一棵又一棵的树被水冲倒、冲断。那水肯定有三米深。
“must have + 过去分词”表示对已发生事情的猜测。在英语中，must，may，can三个情态动词可用来表示对事情的猜测。Must意为“肯定”，语气很有把握；may意为“可能”、“也许”，语气把握性不大。两者常用在肯定句中。Can意为“肯定”、“也许”，常用在否定句或疑问句中。Must，may，can三者用于表示猜测时，其后面可跟三种不同的动词形式：1）跟动词原形表示对现在事情的猜测；
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