中考英語難點語法詳解
中考英語難點語法詳解
在初中英語教學(xué)中,語法的學(xué)習(xí)屬于初級階段,對以后系統(tǒng)學(xué)習(xí)英語至關(guān)重要。接下來學(xué)習(xí)啦小編為你整理了中考英語難點語法詳解，一起來看看吧。
中考英語難點語法詳解：what的三種用法
引導(dǎo)名詞性從句的what在從句中作主語、賓語、表語或定語。
(1)具有疑問代詞性質(zhì)的what：意為“什么，什么樣的”。如：
I don’t know what he needs. 我不知道他需要什么。(what在賓語從句中作賓語)
(2)在名詞前表示感嘆的what：意為“多么”。如：
Only then did I recognize what silly mistakes I had made. 只是在那時我才意識到我犯了多么愚蠢的錯誤。(what在賓語從句中作定語)
(3)具有關(guān)系代詞性質(zhì)的what：意為“所……的”。
相當于“the+名詞+that”或者all that，即好像是既包括了先行詞也包含了關(guān)系代詞，因此，有學(xué)者稱之為關(guān)系代詞型what。如：
What (=The thing that) happened after that was interesting. 后來發(fā)生的事挺有意思。(what在主語從句中作主語)
China is not what (=the China that) used to be. (what在表語從句中作表語)
The boy dived into water and after what (the time that) seemed to be a long time, he came up again. 他跳進水里，過了好像很久之后，他才又從水里出來。(what在賓語從句中作主語)
中考英語難點語法詳解：since和for
Since 用來說明動作起始時間，for用來說明動作延續(xù)時間長度。例如：
I have lived here for more than twenty years.我住在這兒二十多年了。
I have lived here since I was born. 我從出生起就住在這兒了。
注意：并非有for 作為時間狀語的句子都用現(xiàn)在完成時。
I worked here for more than twenty years. (我現(xiàn)在已不在這里工作。)
I have worked here for many years.(現(xiàn)在我仍在這里工作。)
注意：用句型轉(zhuǎn)換的方法，很容易排除非延續(xù)動詞在有for/since結(jié)構(gòu)的完成時中的誤用。
(1)(對)Tom has studied Russian for three years. = Tom began to study Russian three years ago, and is still studying it now.
(2)(錯)Harry has got married for six years. = Harry began to get married six years ago, and is still getting married now.
顯然，第二句不對，它應(yīng)改為 Harry got married six years ago. 或 Harry has been married for six years.
中考英語難點語法詳解：will與would的區(qū)別
1.表示意愿時的區(qū)別
will 表示現(xiàn)在的意愿，would 表示過去的意愿：
Go where you will. 你愿到哪里就到哪里。
She asked if I would go with them. 她問我是否愿意同他們一起去。
2.表示征求意見或提出請求的區(qū)別
主要用于第二人稱的疑問句中，will 和 would 均可用，would 此時并不表示過去，而表示委婉語氣：
Won’t you take off your coat? 你要不要把大衣脫掉?
Will you please post the letter for me? 請幫我寄了這封信好嗎?
3.表示習(xí)慣和傾向性的區(qū)別
will 表示現(xiàn)在的習(xí)慣，would 表示過去的習(xí)慣：
This window won’t open. 這扇窗戶經(jīng)常打不開。
When he was a child, he would often go skating. 他小時候經(jīng)常去滑冰。
would like / would love可視為習(xí)語，意為“想要”，其后接名詞、代詞或不定式：
I would like a cup of tea. 我想要杯茶。
We would love to go with him. 我們想同他一起去。
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