1、Turn left!Turn right!Dont smoke!No smoking!Dont park your car!Go upstairs!Go downstairs!positive structures Eg:Please have a seat here Be a good boy!Let me help you.1._型(即:动词原形(+宾语)+其它成分)。.2._型(即:Be+表语(名词或形容词)+其它成分)。3._型(即:Let s/Let+宾语+动词原形+其它成分)。DoBeLetnegative structures 1.Do型 2.Be型 3.Let型 Dont fo
2、rget me!不要忘记我！Dont be late for school!上学不要迟到!Dont let him go!Let him not go.别让他走。No smoking!禁止吸烟!No fishing!禁止钓鱼!Question tags(反义疑问句)1.Do/Be ,2 Never/Dont do/be 3.Let us Lets Come to have dinner with us this evening,_?Hurry up,_?Let us go swimming,Mum,_?Lets take a walk after supper,_?Dont smoke in
3、the meeting room,_?1.Do be careful next time!2 Do tell me where to buy the tickets for the concert.3.Mary,come here everybody else stay where you are.4 You be quiet！emphatic imperatives(强调祈使句)eg:_,and I will do it better.=Give me one more time,and I will do it better._,and he will succeed.=Give him
4、another chance,and he will succeed._N Use your head,and you will find a way.If you use your head,you will find a way.Hurry up,or you ll be late.If you don t hurry up,you ll be late.One more timeAnother chance Imperative and/or(otherwise)simple sentence（祈使句（祈使句+and/or(otherwise+简单句简单句)）Y es,()No,().Y es,_ No,_ A:Dont go out.It is raining heavily outside.B:_.I have to meet my brother at the airport.homework:Lets Write
