中考英語專項復習—賓語從句
賓語從句是初中英語教學中的重點和難點內容。在英語教學中,教師如果只結合教材所反映的有關知識點來指導學生學習賓語從句,將遠遠不能滿足學生應試的需求。筆者通過對近些年中考試題,尤其是閱讀理解題型的分析,認為對中考賓語從句的復習指導,應注重拓展學生思維的深度,提升學生的應試能力。
難點:語序和時態呼應;與疑問詞+不定式的轉化;與狀語從句的辨析
考點梳理:
一、賓語從句的連接詞
1.連詞that,只起連接作用,在從句中不作句子成分,也無詞匯意義,在口語中常被省略。
eg. He knew (that) he should work hard.
2.連詞if 、whether,它們起連接作用,在從句中不作句子成分,作“是否”解,在口語中多用if。
eg. Tom don't know if/whether his grandpa liked the present.
He asked me whether or not I was coming.
一般情況下,if 和whether可以互換,但以下3種情況只能用whether:
①在不定式前:Whether to go there or not hasn't been decided.
②在介詞前:It depends on(依靠) whether it is going to rain.
③與or not連用:They are talking about whether to go there or not.
3.連接代詞who, whom, whose, what, which,連接副詞when, where, why, how, 它們起連接作用,作句子成分,各有自己的意義。
eg. The teacher asked the new students which class he was in.
I wonder where he got so much money.
【注意】
1.由連接代、副詞引導的賓語從句可以和“疑問詞+不定式”結構轉化。
eg. I don't know how I should do with the presents. ==> I don't know how to do with the presents.
2.要注意區分判斷由if、when引導的從句類型.
二、賓語從句的語序
賓語從句的語序是陳述語序,即“連接詞+主語+謂語+其它成分”。特別強調:它的主語和謂語的語序是陳述語序,而不是疑問句的倒裝結構。
Can you tell me who(m) do we have to see?(╳)
Can you tell me who(m) we have to see?( √)
The teacher asked the students what they were doing.(思考: what在從句中的成分)
陳述句變為賓語從句時,要注意人稱和時態的變化,語序不變。 eg. She said, “I will leave a message on the desk.” → She said she would leave a message on the desk.
一般疑問句和特殊疑問句變為賓語從句時,也要注意人稱和時態的變化,后面接陳述語序。Eg. “Where are the tickets?” I asked him. → I asked him where the tickets are.
三、賓語從句的時態呼應
賓語從句中謂語動詞的時態,常常受到主句謂語時態的制約,此為時態呼應。如果主句謂語是一般現在時或將來時,從句謂語的時態不受限制;如果主句謂語的時態是一般過去時,從句一般要隨著改為相應的過去時態(一般過去時、過去進行時、過去將來時、過去完成時)。
eg. I thought (that) you are free today. (╳)
I thought (that) you would be free today. ( √)
【注意】當賓語從句敘述的是客觀真理時,不管主句謂語的時態如何,從句都用一般現在時。
eg. The teacher told us (that) the earth moves around the sun.
四.其他需要說明的問題
1.標點由主句決定,如主句是陳述句、祈使句,則用句號;是疑問句則用問號。
eg. I heard she had been to the Great Wall. Can you tell me which bus I should take?
2.要注意個別句子中主從句人稱的一致。
▲五.賓語從句和狀語從句的區分
eg. 1) I will go out tomorrow if it is fine.
2) I don't know if the train has arrived.
句1)中if引導的是狀語從句。這個從句表示“條件”,修飾主句。整個句子的意思是如果明天天氣好,我就出去。句2)中if引導的是賓語從句,充當謂語動詞don't know的賓語。整個句子的意思是我不知道火車是否到達。
判斷方法:
1.可以從整個句式看。狀語從句一般可以放在主句的前面或后面(個別除外),賓語從句只能放在主句謂語動詞之后。
2.從引導詞看。if充當賓語從句的連接詞時,相當于whether, 詞義為“是否”,充當狀語從句的連接詞時,詞義為“如果”。when充當賓語從句的連接詞時,意為“什么時候”,充當狀語從句的連接詞時,意為“當……的時候”。
3.從時態看。if和when作連接詞時,引導賓語從句要注意:從句的謂語動詞的時態應根據主句的時態作相應的變化。if和when充當從屬連詞時,引導條件和時間狀語從句,若主句的謂語動詞用一般將來時,則從句的時態應用一般現在時表示將來。