英語知識點

　　行為動詞的變化。

　　肯定句：主語+動詞原形(+其它)。

　　否定句：主語+ don't( doesn't ) +動詞原形(+其它)。

　　如：I like bread. I don't like bread.

　　當主語為第三人稱單數時，要用doesn't構成否定句。

　　如：He ofter plays football.

　　He doesn't often play football.

　　一般疑問句：Do( Does ) +主語+動詞原形+其它。(句首加助動詞do, does)

　　如：I often play football.

　　- Do you often play football?

　　- Yes, I do. / No, I don't.

　　當主語為第三人稱單數時，要用does構成一般疑問句。

　　如：She goes to school by bike.

　　- Does she go to school by bike?

　　- Yes, she does. / No, she doesn't.

　　特殊疑問句：疑問詞+一般疑問句。

　　如：She goes to school by bike.

　　Does she go to school by bike?

　　How does she go to school?

　　動詞+s的變化規(guī)則

　　1.一般情況下，直接加-s，如：cook-cooks, milk-milks

　　2.以s. x. sh. ch. o結尾，加-es，如：guess-guesses, wash-washes, watch-watches, go-goes

　　3.以“輔音字母+y”結尾，變y為i, 再加-es，如：study-studies

　　現在進行時

　　1.現在進行時表示現在正在進行或發(fā)生的動作，也可表示當前一段時間內的活動或現階段正在進行的動作。(句中一般含有now, look, listen.)

　　2.現在進行時的肯定句基本結構為be+動詞ing.

　　如：Tom is reading books in his study .

　　3.現在進行時的否定句在be后加not。

　　如：Tom is reading books in his study .

　　Tom is not reading books in his study .

　　4.現在進行時的一般疑問句把be動詞調到句首。

　　如：Tom is reading books in his study .

　　Is Tom reading books in his study ?

　　5.現在進行時的特殊疑問的基本結構為：疑問詞+一般疑問句?

　　(注意：當劃線部分包含謂語動詞時，用疑問詞代替劃線部分放到句首，原劃線處應加上doing)

　　如：Tom is reading books in his study .

　　Tom is reading books in his study .

　　Is Tom reading books in his study ?

　　Is Tom reading books in his study ?

　　What is Tom doing in his study?

　　Where is Tom reading books?

　　動詞加ing的變化規(guī)則

　　1.一般情況下，直接加ing，如：cook-cooking

　　2.以不發(fā)音的e結尾，去e加ing，如：make-making, taste-tasting

　　3.如果末尾是輔音字母加一個元音字母和一個輔音字母，雙寫末尾的輔音字母，再加ing，如：run-running, stop-stopping