3.虛擬語(yǔ)氣強(qiáng)化練習(xí)
1. If it hadn't been for your help，we would have been （be） in real trouble.
解析：與過(guò)去事實(shí)相反的虛擬語(yǔ)氣的主句
2. He would have given you more help，if he had not been （not be） so busy.
解析：與過(guò)去事實(shí)相反的虛擬語(yǔ)氣的從句
3. It is high time that we took?。╰ake） firm measures to protect our environment.
解析：It is high time +過(guò)去式的虛擬形式
4. It was imperative that students finish?。╢inish） their papers before July 1st.
解析：It was imperative that+動(dòng)詞原形的虛擬形式
5. They demanded that the right to vote be given?。╣ive） to every adult person.
解析：demand所接賓語(yǔ)從句用動(dòng)詞原形的虛擬形式
6. There was a mistake on my paycheck. I should have received?。╮eceive） $10 more.
解析：與過(guò)去事實(shí)相反的虛擬語(yǔ)氣的主句，表示“本應(yīng)該收到”而實(shí)際上沒(méi)有。
7. I would rather he bought （ buy） the house next year.
解析：would rather后接賓語(yǔ)從句，從句用過(guò)去式表示虛擬語(yǔ)氣。
8. The manager told us to be friendly to the visitors as if we had met?。╩eet）them before.
解析：as if 所引導(dǎo)的從句用過(guò)去完成式表示虛擬語(yǔ)氣。
9. Should she come tomorrow，I _________ take her to the museum. × 正確答案為C
[A] can
[B] will
[C] would
[D] must
解析：與將來(lái)事實(shí)相反的虛擬語(yǔ)氣的主句。
10. If we _________ everything ready by now，we should be having a terrible time tomorrow. 正確答案為A
[A] hadn't got
[B] didn't get
[C] wouldn't have got
[D] wouldn't get
解析：從句與現(xiàn)在事實(shí)相反，但本身已經(jīng)是現(xiàn)在完成時(shí)（從by now可以看出），所以變?yōu)檫^(guò)
去完成時(shí)。
4.定語(yǔ)從句和名詞性從句強(qiáng)化練習(xí)
1. Studies have shown _________ teenagers often suffer from depression. 正確答案為A
解析：that 引導(dǎo)賓語(yǔ)從句
[A] that
[B] which
[C] in which
[D] in that
2. It is a well-known fact _________ a person will move in a circle when he cannot use his eyes to control his direction. 正確答案為A
[A] that
[B] if
[C] when
[D] whether
解析：that 引導(dǎo)同位語(yǔ)從句
3. On the other hand concern is also growing about the possibility of a new economic order_________ resource-rich nations of the Third World would combine to set high commodity prices. 正確答案為C
[A] which
[B] what
[C] that
[D] in that
解析：that 引導(dǎo)同位語(yǔ)從句
4. It is not yet known _________ computers will one day have vision as good as human vision.
正確答案為A
[A] whether
[B] if
[C] that
[D] how
解析：it為形式主語(yǔ)，whether引導(dǎo)真正的主語(yǔ)從句
5. Such attitudes amount to a belief _________ leisure can and should be put to good use. 正確答案為D
[A] which
[B] if
[C] whether
[D] that
解析：that 引導(dǎo)同位語(yǔ)從句
6. The reason for making a decision is _________ a problem exists，goals are wrong，or something is standing in the way of accomplishing them. 正確答案為D
[A] why
[B] because
[C] where
[D] that
解析：that 引導(dǎo)表語(yǔ)從句
1. If it hadn't been for your help，we would have been （be） in real trouble.
解析：與過(guò)去事實(shí)相反的虛擬語(yǔ)氣的主句
2. He would have given you more help，if he had not been （not be） so busy.
解析：與過(guò)去事實(shí)相反的虛擬語(yǔ)氣的從句
3. It is high time that we took?。╰ake） firm measures to protect our environment.
解析：It is high time +過(guò)去式的虛擬形式
4. It was imperative that students finish?。╢inish） their papers before July 1st.
解析：It was imperative that+動(dòng)詞原形的虛擬形式
5. They demanded that the right to vote be given?。╣ive） to every adult person.
解析：demand所接賓語(yǔ)從句用動(dòng)詞原形的虛擬形式
6. There was a mistake on my paycheck. I should have received?。╮eceive） $10 more.
解析：與過(guò)去事實(shí)相反的虛擬語(yǔ)氣的主句，表示“本應(yīng)該收到”而實(shí)際上沒(méi)有。
7. I would rather he bought （ buy） the house next year.
解析：would rather后接賓語(yǔ)從句，從句用過(guò)去式表示虛擬語(yǔ)氣。
8. The manager told us to be friendly to the visitors as if we had met?。╩eet）them before.
解析：as if 所引導(dǎo)的從句用過(guò)去完成式表示虛擬語(yǔ)氣。
9. Should she come tomorrow，I _________ take her to the museum. × 正確答案為C
[A] can
[B] will
[C] would
[D] must
解析：與將來(lái)事實(shí)相反的虛擬語(yǔ)氣的主句。
10. If we _________ everything ready by now，we should be having a terrible time tomorrow. 正確答案為A
[A] hadn't got
[B] didn't get
[C] wouldn't have got
[D] wouldn't get
解析：從句與現(xiàn)在事實(shí)相反，但本身已經(jīng)是現(xiàn)在完成時(shí)（從by now可以看出），所以變?yōu)檫^(guò)
去完成時(shí)。
4.定語(yǔ)從句和名詞性從句強(qiáng)化練習(xí)
1. Studies have shown _________ teenagers often suffer from depression. 正確答案為A
解析：that 引導(dǎo)賓語(yǔ)從句
[A] that
[B] which
[C] in which
[D] in that
2. It is a well-known fact _________ a person will move in a circle when he cannot use his eyes to control his direction. 正確答案為A
[A] that
[B] if
[C] when
[D] whether
解析：that 引導(dǎo)同位語(yǔ)從句
3. On the other hand concern is also growing about the possibility of a new economic order_________ resource-rich nations of the Third World would combine to set high commodity prices. 正確答案為C
[A] which
[B] what
[C] that
[D] in that
解析：that 引導(dǎo)同位語(yǔ)從句
4. It is not yet known _________ computers will one day have vision as good as human vision.
正確答案為A
[A] whether
[B] if
[C] that
[D] how
解析：it為形式主語(yǔ)，whether引導(dǎo)真正的主語(yǔ)從句
5. Such attitudes amount to a belief _________ leisure can and should be put to good use. 正確答案為D
[A] which
[B] if
[C] whether
[D] that
解析：that 引導(dǎo)同位語(yǔ)從句
6. The reason for making a decision is _________ a problem exists，goals are wrong，or something is standing in the way of accomplishing them. 正確答案為D
[A] why
[B] because
[C] where
[D] that
解析：that 引導(dǎo)表語(yǔ)從句