What about having a game of chess? 下盘棋怎么样？

　　　　How come they left you alone here? 他们怎么会把你一人留在这里呢？

　　　　What if it ' s raining? 如果天下雨怎么办？

　　　　Why not try again? 为什么不再试试呢？

　　　　c) 在口语中，为了避免重复，不定式可以省去和句子前部重复的动词原形而只留下不定式符号 to 。

　　　　He may leave if he wishes to. 他可以走，如果他愿意的话。

　　　　Don ' t go till I tell you to. 等我叫你走你再走。

　　　　3. 被省略的部分一般可以在句子中补上，但有时省略结构已经定型，如果把省略部分补上，反而不合乎习惯。

　　　　He is taller than I am. 他比我高。（ am 之后省略 tall ，补上不合习惯）

　　　　No parking. 禁止停车。（告示用语 = No parking is allowed here. ）

　　　　有一些习惯表达很难补上所省略的部分：

　　　　Not at all. 不用谢。

　　　　No matter. 不要紧。

　　　　Thanks. 谢谢。

　　　　语法应试篇

　　　　I. 改写句子 使用省略手段避免下面各句重复与冗赘 :

　　　　1. Someone has used my mobile phone, but I don ' t know who has used it.

　　　　2. John worked hard but his brother did not work hard.

　　　　3. I have lazy students and hardworking students in my class.

　　　　4. --- Has he ever been abroad?

　　　　--- No, he has never been abroad.

　　　　5. If it is necessary, we will finish it ahead of time.

　　　　6. You must not be late and you must not be absent.

　　　　7. Give me your name and address, please.

　　　　8. It is well done.

　　　　9. Mother can take a rest, Mother should take a rest but Mother won ' t take a rest after long hours of work.

　　　　10.He could answer the questions very well if he would answer the questions but he didn ' t answer the questions.

　　　　II. 单项选择 从 A 、 B 、 C 、 D 四个选项中，选出可以填入空白处的最佳答案：

　　　　1. --- I won ' t do it any more. --- ________?

　　　　A. Why don ' t B. Why don ' t do it any more

　　　　C. Why not D. Why not to

　　　　2. Although ________ to stop, he kept on working.

　　　　A. tell B. telling C. having told D. told

　　　　3. --- Will you waste your time and money on that? --- Certainly ________.

　　　　A. I not B. don ' t C. not D. no

　　　　4. --- Mary didn ' t attend the lecture, did she? --- Yes, she ________.

　　　　A. attended B. didn ' t attend C. didn ' t D. did

　　　　5. --- What ' s Joan doing?

　　　　--- _________ newspapers in the room.

　　　　A. She reading B. She reads

　　　　C. To read D. Reading

　　　　6. _________ always succeed.

　　　　A. Honest and clever students B. Students who honest and clever

　　　　C. Honest students and clever D. Students are honest and clever

　　　　7. --- Can you climb that tree, my boy? --- __________ ?

　　　　A. I B. Myself C. Mine D. Me

　　　　8. Some people are against the plan but _______ support it.