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作者：丁楠 姜經志

賓語從句是用來充當賓語成分的句子。其構成為"引導詞+主語+謂語+其它"，其語序是陳述句語序。引導賓語從句的連接詞很多，多有實在意義，稱為有意連詞；that也可以引導賓語從句，但本身沒有實在意義，稱為無意連詞。

[第一關] 情境關

that引導的賓語從句可以作動詞、形容詞等的賓語。主句中常見的謂語動詞有say, know, hear, see, hope, think, believe, write, tell等。系動詞加形容詞afraid, worried, sure等后，也可用that引導的賓語從句。

如：I hope that he will come back soon. 我希望他能快點回來。

I am sure that he will write to me. 我相信他會給我寫信。

I'm afraid that if you've lost it, you must pay for it. 恐怕如果你把它弄丟了，就得照價賠償。

[第二關] 引導詞that省略關

在由that引導的賓語從句中，由于連詞that只起引導功能，無具體意義，不作句子成分, 因此在口語或非正式文體中常可省略,省略之后不影響原句性質和意義。

如：She said (that) she would leave the book on his desk.她說她會把那本書放在他的桌子上。

但是，在下列情況下，that不宜省略：

1. 主從句之間有插入語時。如：It says here, on this card, that it was used in plays.卡片上寫著，它過去是演戲用的。

2. 從句中的主語是that時。如：He thought that that was a washing machine.他認為那是一臺洗衣機。

3. 若出現兩個或兩個以上的that賓語從句，且由并列連詞連接時，只有第一個連接詞that可以省去，其余需保留。如：My aunt said (that) she would come and that she would also bring her daughter. 我姑姑說她要來，還要帶她的女兒來。

[第三關] that賓語從句時態關

由that引導的賓語從句中的時態，通常分三種情況：若主句為一般現在時或一般將來時，賓語從句可根據具體情況選用時態；若主句是過去時，從句一般用相應的過去時態；若從句表示的是客觀真理、名言、自然現象等，從句時態不受主句限制。

如： I think that he moved to Beijing five years ago.我想他是五年前搬到北京的。

He told me that he worked in that factory.他告訴我他在那個工廠上班。

The teacher said that light travels much faster than sound. 老師說光的傳播速度比聲音快得多。

[第四關] 否定轉移關

主句若是I/We think (believe, guess, suppose, imagine...)時，后面的賓語從句若要表示否定概念時，一般應將否定詞not 轉移到主句的謂語中。

如：I don't think (that) you are right. 我認為你不對。

[第五關] 反意疑問句關

含that賓語從句的復合句在變成反意疑問句時，如果主句的謂語動詞為think，believe, guess, suppose, imagine等且主語是第一人稱時，附加疑問部分要由從句決定；反之，附加疑問部分由主句決定。

如：I don't think that he can answer this question, can he?我認為他答不出這個問題，不是嗎？

He said that Mary liked playing football, didn't he?他說瑪莉喜歡踢足球，不是嗎？