1.賓語從句在句中作及物動詞或介詞的賓語,從句放在主句之后,前后不用逗號分開.
2.引導(dǎo)賓語從句的詞有：
連詞that(在口語中that?？墒÷?,if,whether,如：
He knows that Jim will work hard.
連接代詞who,whom,which等,如：
Do you know who (whom) they are waiting for?
連接副詞when,where,how,why等,如：Could you tell me how we can get to the station?
3.whether和if都有“是否”的意思,一般情況下兩者可以換用,但在介詞之后,
不定式之前,與or not連用,在句首或在引導(dǎo)表語從句,同位語從句時,只能用whether,如：I want to know if/whether the news is true.He doesn't know whether to stay or not?
4.賓語從句要用陳述句語序.
5.賓語從句一定要注意時態(tài)呼應(yīng),即：當(dāng)主句謂語動詞是過去式時,從句中謂語動
詞也要用過去范疇的時態(tài),但若從句陳述的是真理或客觀規(guī)律,其謂語的時態(tài)仍用一般現(xiàn)在時,如：
He asked who could answer the question.
My father told me that the earth goes around the sun.
6.一個賓語從句只能用一個連詞.
7.當(dāng)主句謂語動詞是think,believe等動詞時,賓語從句的否定意義要放到主句中.另外,當(dāng)主句主語為第一人稱時,后面若接附加疑問句,那么附加疑問句的主語、謂語應(yīng)與從句中的主謂語保持一致.如：
I don't think he looks like his father,does he?
8.直接引語和間接引語也是賓語從句,直接引語是引述別人的原話,放在引號內(nèi),
不用連詞聯(lián)接；間接引語是用自己的話轉(zhuǎn)述別人的話,通常用連接詞與主句聯(lián)接.
(1)陳述句變?yōu)橐詔hat引導(dǎo)的賓語從句,如：
He said,“I'm happy.”[FY()[FY]]He said that he was happy.
(2)一般疑問句變?yōu)閕f(whether)引導(dǎo)的賓語從句,如：
He asked me,“Does his father know Mr Green?”
---He asked me if his father knew Mr Green.
(3)特殊疑問句變?yōu)橛蓋ho,what,where,how等疑問詞(連接代詞或連接副詞)引導(dǎo)的賓語從句,如：
He asked me,“Where is Mr Wang?”
---He asked me where Mr Wang was.
注意上述例句中連詞、時態(tài)、語序等變化.