【练习】
1.?A doctor can expect＿＿＿at any hour of the day or night.
A.calling?? B.to call?? C.being called?? D.to be called答案：?D
解析：?expect后面接不定式。由题意可知,doctor与call之间是被动关系。
2. — Is Tom a good talker?
? — No, he never speaks to me other than _____(ask) for something?
答案：?asked
?解析：?other than asked for something相当于unless he is asked for something。
3.?Nearly every great building in Beijing was built＿＿＿ south.
A.to face?? B.facing?? C.to have faced?? D.being facing答案：B。
解析：现在分词在句中表示状态。
4.?_______ it with me and I"ll see what I can do.
A. When left ? ?B. Leaving ? ?C. If you leave ? ?D. Leave答案：?D
解析：?祈使句+ and+ 陈述句是1个固定句型，在这个句型当中，前面的祈使句表示1个肯定的条件。
5.?I was afraid____(talk) back to my customers because I was afraid of___(lose) them.?（填空练习）
答案：?to talk； losing。
解析：be afraid to do作“不敢……”解(侧重指不敢作出的一种行为)；be afraid of doing 作“担心……”解(侧重强调害怕产生某种后果)。
6.What Yang Liwei wanted to do when he got out of the spaceship was _____(share) the joy with all the Chinese.??（填空练习）
答案：share?
解析：what引导的名词性从句作主语且从句中含有实义动词do时，用作表语的不定式可不带to。
【小知识】非谓语动词-动词-ing形式的基本用法
（1）作定语：-ing形式作定语用时，如果-ing只是一个单词，就位于其修饰的名词之前，如果是-ing短语，就位于其修饰的名词之后，-ing作定语时，被-ing所修饰的名词就是该-ing的逻辑主语。
另外，-ing作定语用时，其动作和句子谓语动词所表示的动作是同时进行的，如果不是同时进行的，就不能用-ing作定语，要使用定语从句，如：The girl who wrote a letter there yesterday can speak English very well.
（2）作宾语补足语：当-ing在复合宾语中作宾语补足语用时，句中宾语就是这个-ing的逻辑主语，可以带有这种复合宾语的动词有see, watch, hear, observe, feel, find, have, keep等。
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