賓語從句(The Object Clause)在複合句中作主句的賓語。賓語從句通常由下面一些詞引導。
1、由that引導(that在口語或非正式文體中常省略)。
2、由what , when , where, which, who, how ,why等連接代詞或連接副詞引導。
3、由連詞whether或if引導(口語中常用if)。
應注意的幾個問題：
1、賓語從句可放在形容詞後。常用形式是“be+形容詞+賓語從句”
e.g. I am glad you like it .
2、賓語從句與主句時態的一致。
1)主句是現在(或將來)時態時，賓語從句可根據實際需要用不同的時態。
如：He says Mary is playing with the cat .
He says Mary often plays with the cat.
He says Mary will play with the cat.
I think he left yesterday morning.
2) 主句時態是一般過去時，從句要用過去時態的某種形式。
He said Mary was playing with the
He said he hoped to be back soon..
3)當從句所表示的是客觀事實或客觀真理時，該從句都用一般現在時，不用過去時。
如：He said light travels much faster than sound.
3、賓語從句中的否定轉移。如果主句謂語動詞是think , believe suppose 等，而從句的意思是否定的，這時主句的.謂語動詞用否定式，從句用肯定式。如：
I don’t think you are right. 我認爲你不對。
4、將普通的特殊疑問句變成賓語從句時，從句的語序要由疑問句變成陳述句的語序。
When will the meeting begin?-------I want to know when the meeting will begin.
5、將普通的一般疑問句變成賓語從句時，則用if /whether連接，同時變成陳述句語序。
Are you an English teacher ?-------He asked if I was an English teacher.
在下列情況下只能用whether
1)介詞後的賓語從句 I’m thinking about whether we should go fishing.
2)賓語從句提前時 Whether this is true or not, I can’t say.
3)直接與or not連用時 I don’t know whether or not he was ready.
4)在帶to 的動詞不定式前 She hasn’t decided whether to go or not.
if也可引導條件狀語從句，表示“如果”(主將從現，主過從過)。比較：
I don’t know if he will come. If he comes ,I will tell you.
6、在變賓語從句時，要注意以下幾點。1)連接詞 2)人稱 3)語序 4)時態 5)標點
【會考範例】
Miss Green didn’t tell us _______ in 2002.
A. where does she live B. Where she lives
C. where did she live D. where she lived
【解析】答案：D。該題考查的是賓語從句的語序和時態。賓語從句應用陳述句的語序和時態，所以應選D。
2. (上海市徐彙區會考試題)
Would you please tell me ________?
A. when did he come home
B. where he would play football
C. if he had seen the film
D. why he didn’t watch the game
【解析】答案：D。該題考查的是賓語從句的語序和時態。主句用的實際上是現在時，賓語從句在這個句子裏應用陳述句的語序和一般過去時。
3. (哈爾濱市會考試題)
I don’t know when __________.
A. will the train leave B. the train will leave
C. would the train leave D. the train leave
【解析】答案：B。該題考查的是賓語從句的語序和時態。只有B在語序和時態上符合要求。
4. (常州市會考試題)
---We don’t know _____________.
---It is said that he was born in Sweden.
A. what he is B. if he lives here
C. where he comes from D. which country is he from
【解析】答案: C。該題考查的是賓語從句的語序。按照他們談論的話題可知：他們說的是某人是哪裏人。A和B可以排除掉。D的語序不對，只有C正確。
