1.?— Tom enjoys _____ (play) basketball on Sunday afternoons, doesn’t he?

? — Yes, he does. But what his sister enjoys _____(dance) .?（填空練習）

答案：playing； is to dance。

解析：enjoy后常接-ing形式作賓語； what his sister enjoys作主語，is to dance構成句子的謂語。

2. We then listened to the child ________ the article ______ on theblackboard.

答案：?D

解析：?listen to 意為"聽某人做某事"與hear用法相同，其后可以用不帶to 的不定式，也可以用動名詞。writtenon the blackboard 為過去分詞作定語，修飾the article。

3.??His letter, _____(address) to the wrong number, reached me late.?（填空練習）

答案：?having been addressed

解析：?address所表示的動作發(fā)生在謂語動詞所表示的動作之前，且與letter之間邏輯上存在著被動關系，having been addressed...在句中作非限制性定語。

4.?There are lots of places of interest _____(need; repair) ?in our city.（填空練習）

答案：?needing to be repaired。

解析：?needing to be repaired相當于needing repairing，在句中作定語。另外，require和want也有類似的用法。

5.?When I caught him cheating me, I stopped ＿＿things in his shop.

答案：A

解析：當stop后面接不定式時,表示"停下來去做某事"；如果接-ing形式,則表示"停止正在做的事"。

6.— Mum, why do you give me so much popcorn?

? — _____ (kill)the boring time.?（填空練習）

答案：?To kill

解析：?why引導的特殊疑問句通常可用不定式短語來回答。

【小知識】非謂語動詞-動詞-ing形式的基本用法

（1）作主語：?–ing作主語時，如果其結構較長，可用it作形式主語，而將作主語的-ing后置。如：It isn’t much good writing to them again. It’s no use waiting here.

（2）作表語：Her job is washing and cooking. My hobby is collecting stamps.

（3）作賓語：
①作及物動詞的賓語。She likes drawing very much.
②作某些短語動詞的賓語。 Mary is thinking of going back to New York.
③ do+限定詞（my, some, any, the等）+ -ing，表示“做?事”之意，如：We often do our cleaning on Saturday afternoon. Will you do any shopping on Saturday this afternoon?
④作介詞的賓語：Her sister is good at learning physics.
⑤作形容詞worth， busy等的賓語：This book is well worth reading. –ing作賓語帶有賓語補足語時，要用it作為形式賓語，而將作賓語的-ing后置，如：We found it no good talking like that. Do you think it necessary trying again? ??