46._______ in thought, he almost ran into the car in front of him.

A.Losing B.Having lost C.Lost D.To lose

47.You were brave enough to raise objections at the meeting.

-Well, now I regret _______ that.

A.to do B.to be doing

C.to have done D.having done

48.The boy wanted to ride his bicycle in the street, but his mother told him _______.

A.not to B.not to do

C.not to it D.do not to

49.She set out soon after dark _______ home an hour later.

A.arriving B.to arrive

C.having arrived D.and arrived

50.Rather than _______ on a crowded bus, he always prefers _______ a bicycle.

A.ride; ride B.riding; ride

C.ride; to ride D.to ride; riding

51.The visiting Minister expressed his satisfaction with his talks, _______ that he had enjoyed his stay here.

A.having added B.to add

C.adding D.added

●答案解析

1.答案:A

解析:在英語諺語中,常用單詞的相同形式進行表達,made和kept都是過去分詞,表示被動.

2.答案:D

解析:The president's attending the meeting himself是現(xiàn)在分詞的復合結構,在句子中作主語.

3.答案:A

解析:invite與you是動賓關系,要用過去分詞.invited作狀語,表示被動.

4.答案:B

解析:have a role to do sth.具有做某事的作用.

5.答案:B

解析:這是一個主語從句.it作形式主語,whether they will enjoy it作真正的主語.remain后接to do sth.作表語.see與主語從句是動賓關系,所以要用to be seen作remains的表語.

6.答案:D

解析:once begun在句子中作狀語.begin可以作及物動詞,著手.

7.答案:B

解析:to放在key的后面作介詞,后接動名詞;過去分詞短語made by the customers作demand的定語.make與demand是動賓關系,要用過去分詞.

8.答案:A

解析:動詞不定式作目的狀語,表示努力的目的.為了在國際市場上取得更大的份額,許多國有公司正努力使自己的產(chǎn)品具有競爭性.

9.答案:D

解析:動詞不定式表示將要發(fā)生的事,就要…….be + 形容詞后接不定式的一般式,不用被動式.如:The problem is difficult for us to work out.我們很難做出這個問題.

10.答案:C

解析:lack是及物動詞,后接賓語money.his parents與lack是主謂關系,要用現(xiàn)在分詞作狀語.雖然缺錢,他的父母想法讓他上了大學.

11.答案:D

解析:know與words, expressions, phrases是動賓關系,要用過去分詞作定語,表示被動.

12.答案:C

解析:在這個句子中,will do是謂語,要用動名詞作主語.expose與one's skin是動賓關系,要用動名詞的被動式being exposed.

13.答案:B

解析:過去分詞bought作daily goods的定語,buy與daily goods是動賓關系,要用過去分詞表示被動.

14.答案:A

解析:mean doing sth.意味著什么.mean to do sth.打算做什么.

15.答案:A

解析:complete與museum是動賓關系,要用過去分詞completed作狀語,表示被動.現(xiàn)在分詞的被動式being completed只作定語,不作狀語.to be completed作目的狀語,不與when連用.

16.答案:D

解析:In order to make our city green是目的狀語,其邏輯主語是we.

17.答案:C

解析:所提供的情境the newly-elected president is having a hard time說明新任總統(tǒng)現(xiàn)在和將來都有難以解決的問題,要用to settle作定語.

18.答案:A

解析:從already一詞可知,要用現(xiàn)在分詞的完成式.由于已經(jīng)受到如此嚴重的污染,現(xiàn)在清理河道可能太晚了.