2021年成人英語三級考前練習題（二十三）

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2021年成人英語三級考前練習題（二十三）

2021年成人英語三級考前練習題匯總

1. ______ four years since John left school.

A. It was B. Those are C. It is D. They have been

2. By the time Juan gets home, his aunt _____ for Puerto Rico.

A. will leave B. leaves C. will have left D. left

3. “This is a terribly heavy box.”

“　_____　help you to carry it.”

A. I am to 　B. I will C. I D. I am going to

4.All the machines　_____by the end of the following week.

A. were repaired 　B. will be repaired C. have been repaired 　D will have been repaired

5.They believed that by using computers the production of their factory _____.

A.will greatly increase B.would greatly increase

C.has greatly increased D.would be greatly increased

6.No sooner had they got off train _______ it started moving .

A. when B. than C. then D. after

7.We can do nothing unless we _____ more information.

A. are given B. were to be given C. will be given D. were given

8.Most environmental problems exist because adequate measures for preventing them _____taken in the past.

A. was not B. were not C. were not being D. being not

9.The football match _____ in the afternoon.

A. has been held B. is being held C. is going to be held D. will hold

10.I’ll take down your name and address in case you _____ as a witness.

A. will need B.will be needed C. need D. are needed

參考答案及解析：

1.C 自從Johny離開學校有四年時間了。

2.C　將來完成時態(tài)。Leave for 離開一個地方到另一個地方去，By the time　信號詞。

3.B　一般將來時態(tài)。 will 表示一種主觀意愿。

4.D　將來完成時態(tài)。by the end of　到……時間為止，在此句中引導的時間狀語從句為將來時間，所以是用將來時。答案B，D選取哪個?機器(machines)是被修的，所以用被動語態(tài)。顯然，D為正確答案。

5.D 他們相信通過使用計算機，工廠的生產(chǎn)效率將會大大地提高。這是一個表示將來的被動語態(tài)，主句中believed為謂語動詞，是過去式，故從句中的將來時態(tài)為過去將來時，答案范圍縮為B，D。另外，工廠的生產(chǎn)(the production of their factory)是被提高的，所以為被動語態(tài)。由此，答案為D。

6.B “no sooner……than……”固定短語結(jié)構(gòu)，意為 “ 一……就……”，?？純?nèi)容。

7.A unless除非，information信息，我們什么都不能做除非被給予更多的信息，這句為一般現(xiàn)在時的被動語態(tài)。

8.B 被動語態(tài)的否定形式。environmental problems環(huán)境問題。

9.C is going to表示將來要怎么樣，相當于will，其后面的動詞同樣用原形. 足球賽將在下午舉行，足球賽是被舉行的，所以用被動形式be held.

10.D take down記下;in case以防;witness目及者，見證人;address，住址。我將記下你的名字和住址，以備你作為一個見證人時用。一般現(xiàn)在時的被動語態(tài)。顯示然答案為D。

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