2014中考英語必備：語法要點之從句

所屬教程:初中英語學(xué)習(xí)方法

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　　1.賓語從句：怎樣判斷出一個從句是賓語從句?1 在動詞后作賓語(動賓):

　　Do you know where he comes from? 劃線部分是動詞know的賓語.

　　2.在有些接雙賓結(jié)構(gòu)的動詞后作賓語:

　　He asked me when we would leave. 此句中me與從句when-分別是ask的賓語。

　　3在介詞后作賓語(介賓)：Let’s talk about how we solve this problem.

　　4在I’m sorry…, I’m afraid…, I’m sure…等結(jié)構(gòu)后的句子也被認(rèn)為是賓語從句.

　　賓語從句需注意的時態(tài)問題:

　　1主句若是一般現(xiàn)在時，從句根據(jù)不同情況用不同時態(tài)。

　　He says (that) he will have a walk soon. (soon指將來，從句用將來時)

　　The teacher asks who is the cleverest in the school. (暗指目前誰最聰明，從句用現(xiàn)在時)

　　I want to know who came here late this morning. (今早已過去，從句用過去時)

　　2主句若是一般過去時，從句也要用過去時。

　　He wondered if I would come. She told me that her son had got well.

　　She said that she liked watching TV. We thought Jim was wrong.

　　3無論主句是何時態(tài)，從句若表客觀真理，要用一般現(xiàn)在時。

　　Mr. Li said the moon is smaller than the earth.

　　4賓語從句無論有何引導(dǎo)詞，句子都要用陳述句語序。

　　Could you tell me when you will get back to Wuhan?(不是will you)

　　Do you know which sweater she is wearing? (不是is she)

　　2.狀語從句：此處所說的狀語從句用法僅包括條件(if和unless引導(dǎo))狀語從句和時間(when等引導(dǎo),見下文)狀語從句。狀語從句需注意以下問題：

　　1主句若是一般將來時、祈使句或含不表過去的情態(tài)動詞等，則if(如果), unless(除非)，when(當(dāng)…的時候), as soon as(一…就…)，before, after, until, till, as(當(dāng)…的時候)所引導(dǎo)的狀語從句用一般現(xiàn)在時。

　　You may take a rest when you finish doing your work. (主句有情態(tài)動詞)

　　Could you look after my son after I leave home?

　　(情態(tài)動詞could是為了讓語氣委婉，并不指過去時，從句仍用一般現(xiàn)在時)

　　I will go out as soon as it stops raining this afternoon. (主句是將來時)

　　Wait for your brother at the bus station until he arrives. (主句是祈使句)

　　2而主句若是一般過去時，從句也要用表過去時的適當(dāng)時態(tài)，如：

　　I would give the money to the charity if I had a million dollars.

　　When he got to the park, his classmates had left.

　　My son ran towards me as soon as he saw me on the street.

　　3.定語從句：定語從句是指修飾前面名詞或代詞的句子。從句前面的名詞或代詞叫先行詞，從句中的引導(dǎo)詞叫關(guān)系代詞或關(guān)系副詞。關(guān)系代詞who只指人，which只指物。that既可指人又可指物。whose 后必須跟有名詞，既指人，也可指物。關(guān)系詞作主語時，不可省略，作賓語時可省略。whom只指人，只作賓語。關(guān)系副詞where指“在那里”，when指“在那時”。 (以下所給例子凡斜體字部分均作定語從句。)

　　She is a girl who / that is beautiful and kind-hearted. The girl who / that is tall is my sister.

　　(以上關(guān)系詞作主語，不可省略。)

　　She is a girl (who / whom / that) I know very well. (關(guān)系詞做know的賓語，可以省略。)

　　That boy whose hair is very long is my brother. I own a bike whose price is high.

　　(關(guān)系詞whose表所屬，后需接名詞。前句指人，譯為“這個孩子的”;后句指物，譯為“這個自行車的”。)

　　I bought a watch (which / that) I paid 100 yuan for. (指物, 作pay的賓語，可以省略。)

　　I prefer a place which / that is clean and quiet. (關(guān)系詞譯為“這個地方”，主語，不可省)

　　I prefer a place where I can live a quiet life. (關(guān)系詞譯為“在這個地方”，是地點副詞。)

　　I shall never forget the day when a boy helped me find my dog. (“在這一天”，是時間副詞)

　　4.wish和hope:1wish既可接to do sth. 也可接sb + to do sth. 也可接that從句.

　　I wish to spend my summer holiday in Qingdao. I wish you to join my party this Sunday.

　　I wish (that) I could be a scientist. (注：接that從句時，從句用虛擬語氣。)