小學(xué)英語四大時態(tài)及句式變化

1、【精品文檔】如有侵權(quán)，請聯(lián)系網(wǎng)站刪除，僅供學(xué)習(xí)與交流小學(xué)英語四大時態(tài)及句式變化概念結(jié)構(gòu)關(guān)鍵詞一般過去時表示過去發(fā)生的動作或存在的狀態(tài)動詞變?yōu)檫^去式過去的時間詞：yesterday, last week, three years ago一般現(xiàn)在時經(jīng)常性發(fā)生的動作或存在狀態(tài)主語為“三單”，動詞加s/es；非“三單”，動詞用原形頻度副詞：sometimes, usually, often, always, never, seldomevery day現(xiàn)在進(jìn)行時現(xiàn)在正在發(fā)生的動作be + v.ingListen, look, now, at+具體時間點一般將來時將來發(fā)生的動作或存在的狀態(tài)be goin

2、g to/will 動詞原形將來的時間詞：tomorrow, the day after tomorrow, next+一段時間小學(xué)英語四大時態(tài)各時態(tài)句式1、含有be動詞的句子：否定句：在be動詞后加not He is not a teacher. (is not=isnt) You were not at home yesterday. (were not=werent) I am not doing my homework. She is not going to swim tomorrow.一般疑問句：把be動詞提到主語前面，句號變問號 Is he a teacher?Were you

3、at home yesterday?Are you doing your homework?Is she going to swim tomorrow?(含有情態(tài)動詞的句子，將情態(tài)動詞看成be動詞，一樣方式進(jìn)行變換)2、含有實義動詞的句子否定句：請助動詞do, 在do后加not，句中實義動詞用原形 注意：dodoes, did, dont- doesnt, didnt I do not like him. (do not = dont) He doesnt like apples. You didnt like him.一般疑問句：在請助動詞do, 將do提到主語前面，句中實義動詞用原形 Do you like me? Does he like apples? Did you go to school yesterday?3、特殊疑問句，助動詞和be動詞都要放在特殊疑問詞后、主語之前 What do you usually do on Sunday? What are you doing