祈使句的用法及练习 一、含义 用来表示请求、命令、劝说、叮嘱等的句子就是祈使句。祈使句一般以动词原形开头。 二、形态 （一）Be型 (be+adj) Be careful! Be dangerous!Be quiet! （二）Do型 (Do代表动词原形) Open the door! Close the window! Go and play football! （三）Let's或Let us型 Let's go home! Let us help Mary! Let me clean the room! （四）No+动名词，多用在标语禁令中 No smoking! No parking! No spitting! No+动名词可以与Don't+动词原形替换。 No smoking!=Don't smoke! 三、否定形式 Be型和Do型前直接加Don't，Don't be careful! Don't open the door! Let's型可前面直接加Don't或let's后加not。 Don't let's go home!/Let's not go home! 四、反意疑问句 祈使句的反意疑问句一般用will you? Open the door,will you? Let's---用shall we? Let's go home,shall we? Let us---用will you? Let us help Mary,will you? 五、练习题 （一）用括号内所给词的适当形式填空 1． It's an important meeting.______ (not be) late. 2．_____ (look) out!A car is coming! 3．________ (not make) any noise! The baby is sleeping. 4．Let's _______(not say) anything about it. 5．________ (not let) the baby cry. 6．_____ (read) aloud,please. 7．_________ (not talk) with your classmate in the class. （二）选择题 1．Her doctor said:"____ work so hard" A stop B Don't C can't D No 2．Sindy,____ to be here at 8 o'clock. A is sure B is sure that C will be sure D be sure 3．_____ him the secret,will you? A Don't tell B Not to tell C Not telling D No telling 4．Please _____ look outside,look at the blackboard. A not B don't C aren't D can't 5．John,read the text for us,_____ ? A does he B will he C do you D will you 6．Let's do it at once,_____ ? A shall we B will you C do we D do you 7．Let us do it at once,____ ? A shall we B will you C do we D do you 8．_____ in bed, It's bad for your eyes. A Not to read B Don't read C Don't to read D Not read 9．____ smoking! A Don't B No C Don't to D Be not 本文来源：https://www.wddqw.com/doc/69ce53902dc58bd63186bceb19e8b8f67c1cefac.html