A,由that 引導(dǎo)的陳述句性的賓語從句，在很多動詞如say, think, wish , hope, see, believe, agree, expect, hear , feel等動詞后。連詞that只起連接作用，在從句中不做句子的成分，也無詞匯意義，在口語中常被省略，但在大多數(shù)情況下還是以不省為好，特別是在筆語中。
例：I told him that he was wrong.
l在think,believe, suppose, expect等動詞引起的賓語從句中，有時謂語盡管是否定意義，卻不用否定形式，而將think 等動詞變?yōu)榉穸ㄐ问健?/p>
例：I don’t think you are right. (我認(rèn)為你做的不對)
l在許多帶有復(fù)合賓語的句子中，that引導(dǎo)的賓語從句經(jīng)常移到句子的后面，而用it做形式賓語。
例：We think it wrong that he told a lie to everyone (我認(rèn)為他向每一個人撒謊是錯誤的)
B,由連詞if、 whether 引導(dǎo)的表示“是否…”的賓語從句。Whether,if 在從句中不做句子的成分，一般情況下，whether和if 可以替換。
例：I don’t know if/whether he will come tomorrow.
The teacher asked if/whether we had finished the experiment.
l在介詞后面的賓語從句中不用if引導(dǎo)
例：Everything depends on whether we have enough money。
l賓語從句中有or not時不用if引導(dǎo).
例：I don’t know whether the movie star will come or not.
l和不定式連用作賓語時不用if引導(dǎo).
例：Whether to go there or not hasn’t been decided.
C,由wh-引導(dǎo)的賓語從句。連接代詞who,whom,whose, what, which,和連接副詞when, where, why, how 等連接的賓語從句，它們在句中即有連接從句的作用，又在句中充當(dāng)句子的成分。
例：Do you know which film they are talking about? (which做定語)
I don’t know where he lives. (where 做地點狀語)
二，賓語從句的語序，
賓語從句從句的語序必須是陳述語序，既連接詞+主語+謂語+其他成分
例：I believe that they will come soon.
He asked me whether I was a teacher.
They wanted to know what they can do for us.
二，賓語從句的時態(tài)。
賓語從句的時態(tài)受主句的限制，
既：主句是一般現(xiàn)在時態(tài)，從句根據(jù)實際情況而定。
主句是一般過去時態(tài)，從句用相應(yīng)的過去的時態(tài)。如果從句的動作發(fā)生在主句之前，則從句要用過去完成時態(tài)。
例:
1)She says that she is a student.
She said that she was a student.
2)She says that she will fly to Japan in a week.
She said that she would fly to Japan in a week.
3)She says that she has finished her homework already.
She said that she had finished her homework already.
4)She says that she can sing a song in English.
She said that she could sing a song in English.
l如果賓語從句說的是客觀真理、自然現(xiàn)象或事實時，這時賓語從句要用一般現(xiàn)在時態(tài)。
例：The teacher said that the earth goes round the sun.
He told me that Japan is an island country.
lCould you tell me…是用來征詢對方的意見，語氣委婉，并不表示過去。
例：Could you tell me when we will visit the Histury Museum?
注意事項：
u由陳述句變成賓語從句時，要注意人稱的變化。
例：She said: “I have been to England before.”
She said that she had been to England before.
She asked me: “Do you like maths?”
She asked me if I liked maths.
u賓語從句與簡單句的交換。
由連接代詞和連接副詞引導(dǎo)的賓語從句，如果賓語從句的主語和主句的主語是同一個人時，可以用“疑問詞+不定式
”做賓語的簡單句結(jié)構(gòu)。
例：I don’t know what I should do next.
I con’t know what to do next.
He didn’t know where he would live.
He didn’t know where to live.
DO SOME EXERCISES:
1.Can you see________?
A. what he’s reading B. what is he reading
C. what does he read D. he reads what
2.Does Jack come from Japan? Do you know?(合并成一個句子)
Do you know_____Jack _____from Japan?
3._What did your son say in the letter?
_He told me that he___ the Disney would the next day
A.will visit B. has visited
C. is going to visit D. would visit
4.He didn’t know__________
A.what’s the matter B.what the matter is
C. what was the matter D. what the matter was
5.Somebody called you just now,but I didn’t know____
A.who were they B. who they were
C. who was it D. who it was
6.I want to know_____
A.what is his name B. what’s his name
C. that his name is D. what his name is
7.---Could you tell me ___she is looking for?
---Her cousin,susan.
A.that B.whose C .who D.which
8.---What are you searching the Internet for?
---I’m trying to find out____.
A.What is the difference between SARS and BIRDFLU
B.How many persons have died in Iraq
C.How to protect our environment
D.Why is our Chinese team be able to beat Korea
9.Do you know___________?(誰正在唱歌)
10.Do you know___________?(她正在和誰談話)
9 who is singing
10 who she is talking with
11 what happened yesterday
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