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as if和as though引导的从句所叙述的情况与事实相反时，从句的谓语动词多用虚拟语气。在虚拟语气结构中，用________时态来表示现在的情形；用________时来表示过去的动作或状态；用________时表示正在进行的动作；用________时表示将要发生的动作。
当as if和as though从句的主语和主句主语一致，且从句中含有系动词be的某种形式时该主语和系动词可以省略。
例如：John paused as if(he was)expecting Mary to speak．
第七部分、从句类型辨别（20题，每题0.5分，共10分）
请写出下列句中的从句属于哪种类型的从句：主语从句、宾语从句、表语从句、同位语从句、定语从句、状语从句。
101. I have reached a point in my life where I am supposed to make decisions of my own. _______.
102. I found the wallet where you left it. _________________.
103. She sang as she walked home all the way. _________________.
104. Many people, as you know, are learning foreign languages. _________________.
105. He set out to work the moment he got to the office. _________________.
106. This is the reason he gave me. _________________.
107. The news that our team has won the game was true. _________________.
108. I met some foreigners yesterday, two of whom are from the USA. _________________.
109. The news that he told me was not true. _________________.
110. It was obvious that you’ve made a big mistake. _________________.
111. He will talk to us about what he saw in the school. _________________.
112. He looks as if he was going to cry. _________________.
113. Give me your promise that you will come to our party this evening. _________________.
114. What can be done has been done. _________________.
115. The question is who is responsible for what has happened. _________________.
116. I don’t think they will win the game. ___________________.
117. Whatever you do, you must do it well. _____________________.
118. Whatever I have now will be yours in the future. _________________.
119. The book can be of help to whoever wants to do the job. ________________.
120. It remains doubtful whether this is an important discovery. ________________.
查看习题详情和答案>>
-----Did Mr Black resign his post as principal?
-----No,________ was telling a lie.
A. whoever told you that B. those who told you that
C. No matter who told you D. Anyone told you that
A 句意：Mrs Black 辞去校长职务了吗？没有，不管谁告诉你的，他都在说谎。Whoever引导的主语从句，相当于anyone who。如果选B，则those作主语，谓语应用were。 C项引导让步状语从句，不能引导主语从句；D项错误，应改为Anyone who told you that。
查看习题详情和答案>>第七部分、从句类型辨别（20题，每题0.5分，共10分）
请写出下列句中的从句属于哪种类型的从句：主语从句、宾语从句、表语从句、同位语从句、定语从句、状语从句。
101. I have reached a point in my life where I am supposed to make decisions of my own. _______.
102. I found the wallet where you left it. _________________.
103. She sang as she walked home all the way. _________________.
104. Many people, as you know, are learning foreign languages. _________________.
105. He set out to work the moment he got to the office. _________________.
106. This is the reason he gave me. _________________.
107. The news that our team has won the game was true. _________________.
108. I met some foreigners yesterday, two of whom are from the USA. _________________.
109. The news that he told me was not true. _________________.
110. It was obvious that you’ve made a big mistake. _________________.
111. He will talk to us about what he saw in the school. _________________.
112. He looks as if he was going to cry. _________________.
113. Give me your promise that you will come to our party this evening. _________________.
114. What can be done has been done. _________________.
115. The question is who is responsible for what has happened. _________________.
116. I don’t think they will win the game. ___________________.
117. Whatever you do, you must do it well. _____________________.
118. Whatever I have now will be yours in the future. _________________.
119. The book can be of help to whoever wants to do the job. ________________.
120. It remains doubtful whether this is an important discovery. ________________.
查看习题详情和答案>>___________________________, he didn't come to Mary's birthday party.
2. The bridge which was built in 1888 is now under repairs. (改为简单句)
___________________________ is now under repairs.
3. He is said to have passed the driving test. (改为含有主语从句的复合句)
___________________________ he has passed the driving test.
4. Although he is still poor, he has already grasped two foreign languages. (改为倒装句)
___________________________, he has already grasped two foreign languages.
5. He didn't go to school until he was ten years old. (改为强调句)
____________________________________________ he went to school.
6. I saw several houses with mosaic floor and wall paintings. (画线部分改写成定语从句)
____________________________________________
7. With the help of the kind old man, we arrived at the remote village before lunchtime. (用with复合结构做).
___________________________, we arrived at the remote village before lunchtime.
8. "Please don't open the window." said Jack politely to his classmate.
Jack asked his classmate politely _________________________ (间接引语).
9. Time permitting, we can have a walk around the playground after supper. (画线部分改写成状语从句)
___________________________, we can have a walk around the playground after supper.
10. When we see from the hilltop, we can find the city more beautiful. (画线部分改写成分词作状语)
___________________________, we can find the city more beautiful.