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關閉窗口 It is...that通常不能強調哪些成分
請看一道題：
It was a teacher that she __________.
A. was B. seemed C. looked D. married
此題應選D。從句意上看似乎4個選項都行，其實這里只能填D。因為填A，B，C 中的任意一個選項，都會導致句中的 a teacher成為表語，然而按照強調句句法規則，It is...that這一強調句型是不能強調表語的。一般說來，以下成分不能用于強調句中的被強調部分：
1. 表語：
她很美。
正：She is beautiful.
誤：It is beautiful she is.
他是醫生。
正：He is a doctor.
誤：It is a doctor that he is.
但是賓語補足語卻可以用作被強調部分：
他們選他擔任主席。
正：They elected him chairman.
正：It was chairman that they elected him.
2. since，as原因狀語從句(但because從句卻可以)：
他不能來是因為他病了。
正：It is because he is ill that he can’t come.
誤：It is since[as] he’s ill that he can’t come.
3. although引導的讓步狀語從句：
雖然累了，但他還是去了。
正：He went although he was tired.
誤：It was although he was tired that he went.
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