twecaneatinthedininghall.Canweeatintheclassroom?8.他在学校里必须穿校服吗?__________________________________9.是的,必须。/不,不必。_______________________________10.你们必须做什么?_______________________________11.在图书馆里我们必须保持安静。_________________________________Yes,hedoes./No,hedoesn’t.Doeshehavetowearauniformatschool?Whatdoyouhavetodo?Wehavetobequietinthelibrary.一、祈使句1.用法:一般以动词原形开头,表示请求、命令、劝说、警告等。在祈使句中,通常省略句子主语第二人称you。探究乐园2.句子结构(1)肯定句:__________+其他在餐厅里吃东西。________________________________在音乐教室里听音乐。________________________________骑自行车去上学。_________________________________Ridethebiketoschool.Eatinthedininghall.动词原形Listentomusicinthemusicroom.(2)否定句:_____+_________+其他不要和同学们打架。?_______________________________?不要在教室里打篮球。?________________________________Don’tfightwithyourclassmates.Don’tplaybasketballintheclassroom.Don’t动词原形