预习导航

一、用括号内单词的适当形式填空

1．Wang Baoqiang is thought to be a ______(promise)actor.

2．______(stand)on the top of the mountain，I could see the whole city.

3．Not ______(know)her telephone number，we couldn't get in touch with her.

4．______(face)with such a difficult problem，the boy didn't know what to do.

5．I will never forget the ______(smile)faces I have seen in the 2010 Shanghai Expo.

答案：1.promising　2.Standing　3.knowing　4.Faced

5．smiling

二、用所给动词的适当形式填空

1．He often carefully watched the doctors in the ______(operate)room.

2．______(return)from Boston，he found his hometown greatly changed.

3．Look out for cars while ______(cross)the street.

4．______(notice)the house on fire，he dialed 119.

5．______(catch)in the rain，he was wet all over.

6．______(see)from the tower，the city looks just magnificent.

7．When ______(ask)，don't tell him I am in bad health.

8．Generally ______(speak)，the level of the New York High School International Division is pretty high.

答案：1.operating　2.Returning　3.crossing　4.Noticing

5．Caught　6.Seen　7.asked　8.speaking

三、读下列句子，说出其中动词­ing形式作的成分(定语、状语、