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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．
-----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>>句子考查（共8小题，71~74每小题2分, 75~78每小题3分, 满分20分）
根据下列各个句子的要求，完成、改写或翻译句子。
71. It looks as if he were enjoying himself at the party.（改写）
He ______ ______ ______ _______ himself at the party.
72. We don’t permit the students to smoke. （改写）
The students ______ not ______ _______ _______.
73. The doctors took immediate measures in case the disease spread quickly.（改写）
The doctors took immediate measures ______ ______ the disease ______ ______ quickly.
74. Three boys were playing basketball on the playground. (改写)
______ ______ three boys ______ ______ on the playground.
75. The baby calmed down only after his mother came back.（改写）
Only ______________________________________________.
76. My mother told me something. It surprised me greatly.（合并为含主语从句的复合句）
__________________________________________________.
77. He told us that his confidence and courage helped him succeed.（强调划线部分）
He told us it _____________________________________.
78. 4月14日发生在玉树的大地震使我们感到极大震惊。（汉译英，含定语从句）
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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. ________________.
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句子考查（共8小题，71~74每小题2分, 75~78每小题3分, 满分20分）
根据下列各个句子的要求，完成、改写或翻译句子。
71. It looks as if he were enjoying himself at the party.（改写）
He ______ ______ ______ _______ himself at the party.
72. We don’t permit the students to smoke. （改写）
The students ______ not ______ _______ _______.
73. The doctors took immediate measures in case the disease spread quickly.（改写）
The doctors took immediate measures ______ ______ the disease ______ ______ quickly.
74. Three boys were playing basketball on the playground. (改写)
______ ______ three boys ______ ______ on the playground.
75. The baby calmed down only after his mother came back.（改写）
Only ______________________________________________.
76. My mot
her told me something. It surprised me greatly.（合并为含主语从句的复合句）
__________________________________________________.
77. He told us that his confidence and courage helped him succeed.（强调划线部分）
He told 
us it _____________________________________.
78. 4月14日发生在玉树的大地震使我们感到极大震惊。（汉译英，含定语从句）
查看习题详情和答案>>