人教版七年級英語下冊Unit 4 Don't eat in class. 祈使句課件

1、UnitFour人教版七年級下冊人教版七年級下冊 Dont eat in class.Imperative sentence 祈 使 句1Come in !3Let me help you.2Stand up, please!4No smoking!感知祈使句祈 使 句祈使句 是表示請求、命令、建議、禁止等的句子。祈使句 通常省略主語“you”,謂語動詞一律用原形。祈使句的句末一般用感嘆號或句號。有時會在句首或句末加please,使語氣顯得更加客氣。語調(diào)：讀降調(diào)。Be型Do型Let型Do型Be型Let型No型肯定祈使句Listen to me,please!Go along this way,

2、 you will find it!Wash your hands, please!Be quiet, please!Be quick, please!Be careful, please!Let me help you !Let him go!Let us clean the classroom!Do 型Be 型Let 型Do 型祈使句的否定DontDontDontOpen the door , please!Dont open the door , please!Go along this way, you will find it！Dont go along this way, you

3、will find it！Wash your hands, please!Dont wash your hands, please!要點(diǎn)：在句首加DontBe 型祈使句的否定DontDontDontBe quiet, please!Dont be quick, please!Be quick, please!Dont be careful, please!Be careful, please!要點(diǎn)：在句首加DontDont be quiet, please!Let 型祈使句的否定 notnotnotLet me help you !Dont let me help you !Let me he

4、lp you !Let him go!Let him go!Dont let him go!Let us clean the room!Let us clean the room!Dont let us clean the room!要點(diǎn)有二：1、在句首加Dont 2、do not do No 型祈使句No +No +No +No +或或形式表示禁止，是一種警示語，常用于公眾場所，禁止公眾做某事。No photos!No food!No parking!No swimming!No smoking!祈使句的反義疑問句 肯定祈使句，反義疑問句部分用will you 或 wont you否定祈使句

5、，反義疑問句部分用will youe.g. Open the radio, will you? 或 wont you?Dont open the radio, will you?注意：Lets 結(jié)構(gòu)和Let us結(jié)構(gòu)的反義疑問句部分不同， Let s 用 shall we Let us 用 will youe.g. Lets go home, shall we? Let us go home, will you? Practice 1. Lets _swimming this afternoon. A.not go B. not to go C. no goA 2. Kate, _ your homework now. A. does B. do C. is doingB 3. Listen to muisc in the classroom.(變否定句）變否定句） _ _ to muisc in the classroom.Dont listen 4. Lets walk to school.(變否定句）變否定句） Lets _ _to school.5. Read after me, _ _?(反義疑問句）反義疑問句）6. Lets have dinne