來源:網(wǎng)絡資源 2022-08-22 11:38:49
賓語從句
一、賓語從句的種類
賓語從句是一種名詞性從句,在句中作及物動詞的賓語,或介詞的賓語,或
形容詞的賓語。根據(jù)引導賓語從句的不同連詞,賓語從句可分為三類。
1. 由that引導的賓語從句。That只有語法作用,沒有實在的意義,在口語
和非正式文體中可以省略。例如:
He said (that) he wanted to stay at home.
I am sure (that) he will succeed.
2. 由連接代詞who, whom, whose, what, which和連接副詞when, where, why, how引導的賓語從句。這些連接代詞和連接副詞在賓語從句中充當某個成分。例如:
I don’t know why the train is late.
3. 由if或whether引導的賓語從句。If和whether在句中的意思是“是否”。例如:
I want to know if (whether) he lives there.
He asked me whether (if) I could help him.
二、賓語從句的時態(tài)
1. 如果主句的時態(tài)是一般現(xiàn)在時,賓語從句該用什麼時態(tài)就用什麼時態(tài)。
Can you tell me how I can get to the railway station?
2. 如果主句的時態(tài)是一般過去時,賓語從句只能用相應的過去時態(tài)(一般過去時, 過去進行時, 過去將來時,過去完成時)。例如:
He asked what time it was.
He told me that he was preparing for the sports meet.
3. 如果賓語從句所陳述的是客觀真理,其時態(tài)常用一般現(xiàn)在時。例如:
Our teacher said that January is the first month of the year.
Scientists have proved that the earth turns around the sun.
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