名詞性從句中,賓語從句是我們經(jīng)常遇到的,在考試中也是重點、難點的題型,在賓語從句中,需要注意以下幾點。例如:
1. 賓語從句中that 在口語中常被省略,但在正式的文體中,不能省;并且它一般不能引導介詞的賓語從句,但可引導except, but, in 等少數(shù)介詞的賓語從句。如:
I didn’t know (that) he was Li Lei.
我不知道他就是李蕾。
I will do anything I can to help you except that I’m ill.
只要我身體舒服,我愿做任何事情來幫助你。

2. 賓語從句之后帶有補足語成分時,一般須用it作形式賓語,把賓語從句放到句末,此時的that不能省。如:
The boy has made it clear that they can’t play with his toys.
那個男孩已清楚的表明他們不能玩弄他的玩具。

3. 動詞advise, ask, demand, desire, insist(堅決主張), order, propose, request, suggest(建議)等代的賓語從句須用虛擬語氣,即:(should) do的形式。
He asked that we (should) get there before nine o’clock.
他要求我們在九點鐘之前趕到那兒。
The teacher advised us that we (should) not waste our time.
老師勸告我們不要浪費時間了。

4. 賓語從句的時態(tài)與主句的時態(tài)須呼應(yīng)。
1)當主句謂語動詞的時態(tài)是現(xiàn)在時或?qū)頃r,從句的謂語動詞可用任何所需要的時態(tài)表示。如:
He always says that he is our good friend.
他總是說他是我們的好朋友。
When the teacher knows what we have done, he will say that we have done a good deed. 當老師知道我們所干的事情時,他會說我們做了一件好事。
2)當主句謂語動詞的時態(tài)為過去時,從句的謂語動詞須用響應(yīng)的過去時。如:
He didn’t tell us he came from Shanghai.
他沒有告訴我們他來自上海。
He said he had read the book.
他說他讀過這本書。
3)但當從句的內(nèi)容是客觀真理或客觀事實,而不受時間的限制時,即使主句謂語動詞為過去時,從句仍用一般現(xiàn)在時。如
Chairman Mao said that all the imperialists are paper tigers.
毛主席說一切帝國主義者都是紙老虎。
When we were children, we were told that China is in the east of the world.
我們還是小孩子的時候,人們就告訴我們說中國在世界的東方。
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