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1、精品文档精品文档初中英语 祈使句祈使句常常是表达说话人对对方的劝告、叮嘱、请求或命令等。因此，祈使句中一般没有主语，但根据其句意，实际上是省略了主语you。祈使句句末用感叹号或句号，朗读时，常用降调。在表达请求或劝告时，在祈使句前或句末可加上please，以使句子的语气更加缓和或客气。1.肯定的祈使句（1）Do 型祈使句：实义动词原形+其他Stand up,please.=Please stand up.请起立。请打扫教室._（2）Be 型祈使句：Be+adj.Be careful!=Look out!=Take care!小心/当心！请安静._（3）Lets+动词原形Let s go to
2、school together.咱们一起上学去吧。咱们一起打篮球吧._(4)No 型祈使句：No+v-ing/名词（表禁止）eg:No smoking!No photos!禁止说话！_ 禁止停车！_ 2.否定的祈使句(1)Dont+动词原形Dont stand up.别站起来。Dont be careless.别粗心。Dont let them play with fire.别让他们玩火。请不要在教室里打篮球!_（2）Lets(let sb)+not+动词原形Lets not say anything about it.对于这件事，咱们什么也别说。Let them not play with
3、fire.别让他们玩火。别让他们打架._ must“必须”（强调主观意志）；没有人称和数的变化；否定：mustn t“不准”你必须今天完成家庭作业._.你禁止在课堂上说话._ Must I clean the classroom?No,_/_ have to“必须”（强调客观因素）三人称用：has to;否定：dont/doesnt have to他得走了。_ 我们没必要周末上课._ 语法练兵场1._listen to music in the classroom.A.Not B.No C.Don t 2._ late again,Bill!A.Dont to be B.Dont be C.N
4、ot be D.Be not 3._ cross the road until the traffic lights turn green.A.Not B.Wont C.Doesnt D.Dont 4.Kate,_ your homework here tomorrow.A.bringB.brings C.to bring D.bringing 5._ me the truth,or Ill be angry.A.Telling B.To tell C.Told D.Tell 6.She has to _her homework every night.A.does B do C.doing
5、7.Sorry,you _play basketball in the classroom.A can t B must C don t 8.Lets _ on time for classes.A be B be not C are 句型转换1.The teachers often tell the students not to be careless.（改为祈使句）_ _careless,please.2.Please sit next to Nancy.（改为否定句）_ _ next to Nancy.3.Jack has to play the piano every weekend
6、.(改为一般疑问句)_ 4.Be quick!(改为否定句)_ 5.You cant eat food in class.(改为祈使句)_ 6.You must walk to school today.(改为祈使句)_ 7.You cant be late for class next time.(改为祈使句)_ 精品文档精品文档Unit4.Dont eat in class 第一课时Section A 1a 1c 1.掌握本课单词:rule,arrive,hallway,hall,listen,fight,sorry,2.重点短语：dining hall,arrive late for s
7、chool,(be)on time,listen to music 3.重点句型：能正确使用否定祈使句陈述规章要求，对别人的劝告，警告作出礼貌回应 Dont run in the hallways./Dont fight.Sorry,Ms Clark;请写出下列短语。1.在课堂上 _ 2.校规_ 3.做某事迟到 _ 4.准时_ 5.在走廊里 _ 6.在教室里 _ 7.在餐厅里 _ 8.听_ 四.知识点拨1.arrive late for school/be late for school/come to school late 上学迟到2.arrive in/at+地点3.in class 在
8、课堂上get to+地点in the class 在班里reach+地点in the classroom 在教室里3.wear“穿着，戴着”（强调状态）6.listen to“强调听的动作”put on“穿上”（强调瞬间动作）hear“强调听的结果，听见”be in+颜色sound“听起来”系动词后接形容词课堂达标：请写出下列 6 个句子。1.不要在课堂上吃东西。_ 2.不准上课迟到。你必须准时。_ 3.不准在走廊里跑。_ 4.不准在教室里吃东西。你必须在餐厅吃饭。_ 5.不准在课堂上听音乐。_ 6.不准打架。_ 1.Don t arrive late _school.A.at B.in C.
9、for 2.I can t go to the party.I _ do my homework.A must B can C has to 3.-Don t eat in the classroom,Alex.-_,Mr Yang A.Excuse me B.Thanks C.Sorry 4.I usually _ the bus stop at 7:30 in the morning.A arrive B arrive at B arrive in 用 can;can t;must;have to;填空1.Alice _ do her homework,so she goes to ask her teacher for help.2.You don t _clean your room today.3._Jim speak English?4.-_I help her with Chinese?-Yes,you must.