中考英語難點語法詳解
在初中英語教學中,語法的學習屬於初級階段,對以後系統學習英語至關重要。接下來小編為你整理了,一起來看看吧。
:what的三種用法
引導名詞性從句的what在從句中作主語、賓語、表語或定語。
1具有疑問代詞性質的what:意為“什麼,什麼樣的”。如:
I don’t know what he needs. 我不知道他需要什麼。what在賓語從句中作賓語
2在名詞前表示感嘆的what:意為“多麼”。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麼愚蠢的錯誤。what在賓語從句中作定語
3具有關係代詞性質的what:意為“所……的”。
相當於“the+名詞+that”或者all that,即好像是既包括了先行詞也包含了關係代詞,因此,有學者稱之為關係代詞型what。如:
What =The thing that happened after that was interesting. 後來發生的事挺有意思。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. 他跳進水裡,過了好像很久之後,他才又從水裡出來。what在賓語從句中作主語
:since和for
Since 用來說明動作起始時間,for用來說明動作延續時間長度。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:並非有for 作為時間狀語的句子都用現在完成時。
I worked here for more than twenty years. 我現在已不在這裡工作。
I have worked here for many years.現在我仍在這裡工作。
注意:用句型轉換的方法,很容易排除非延續動詞在有for/since結構的完成時中的誤用。
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,它應改為 Harry got married six years ago. 或 Harry has been married for six years.
:will與would的區別
1.表示意願時的區別
will 表示現在的意願,would 表示過去的意願:
Go where you will. 你願到哪裡就到哪裡。
She asked if I would go with them. 她問我是否願意同他們一起去。
2.表示徵求意見或提出請求的區別
主要用於第二人稱的疑問句中,will 和 would 均可用,would 此時並不表示過去,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.表示習慣和傾向性的區別
will 表示現在的習慣,would 表示過去的習慣:
This window won’t open. 這扇窗戶經常打不開。
When he was a child, he would often go skating. 他小時候經常去滑冰。
would like / would love可視為習語,意為“想要”,其後接名詞、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。