Let的否定形式
若 let后跟的第一人称 ，否定形式通常是在动词
前面直接加not.
Let's/ Let me+not +动词原形. Let's not open the door.
Let me go that far. _______________
若 let后跟的第三人称代词或名词 ，否定形式通常 是在let前面直接加Don't .
第三关：Let’s Say
1.You can’t sleep on the bench. Don’t _______ on the ________. 2.You can’t climb trees in the park. Don’t ______________________. 3.You can’t sit on the grass. ____________________________.
Don't let +第三人称代词或名词+动词原形. _______ let them play with fire.
Guessing Game
No smoking!
Guessing Game
No Parking!
No smoking！禁止吸烟!
No parking！禁止停车！ No swimmin ！禁止游泳！ No No photos!禁止拍照！
Touch your eye. Touch your nose. Touch your mouth.
Touch your ear. Touch your elbow. Touch...
除了以动词Touch开头的句子，在日常 的学习中你还知道哪些以动词原形开头的句子
1. Close the window. 关上窗户。 2. Turn left! 3.Go and wash your hands. 4.Watch your steps. ......
Sara 陈老师
Simon says!
If you hear “Simon says touch your eye” then you touch your eye. If you hear “Touch your eye” without Simon says, then don’t touch your eye, just stay there.
No +v-ing 是日常生活中常见的 或n. 警示语 g !禁止钓鱼 fishing
学会了吗？
现在是施展你的绝招的的时候了！
1. Please _____ C do it. A. he B. he let C. let him D. him 2. Jim, _____ C me a hand. A. gives B. is giving C. give D. will give 3. Let me ___ C on duty today. A. am B. / C. be D. do 4. Let's ___ A our time. A. not waste B. no wasting C. not to waste D. no waste 5. —____ D higher, and you will see the house. — OK. A. If you stand B. To stand C. When you stand D. Stand
有一个传说，关于祈使句有一本“秘笈”，谁能最快 拿到这本秘笈，谁就能拥有一个魔法宝盒，等什么呢， 做好准备，睁大眼睛，just do it!
秘 笈
祈使句，无主语，只用动词就可以。 表示请求或命令，加上please表客气。 如果变成否定句，Don't开头是规律。 No fishing！是警示语，祈使句用法要牢记!
Let+第一人称（me，us）+do Let me have a look. Let us go. Let's go. 注意:Let's包括对方，Let us不包括对方。
Let+第三人称代词 (宾格：him，her，it，them) 或名词. Let her put on her new dress. Let Tom go there himself.
二：Be开头的祈使句
Be+表语(名词/形容词等)...
1.Don't touch my nose. 2._____ swim in the river 3.Don't ___ in the sun. 4.Don't be late. 否定：Don't
Don't+动词原形/be+其它
III. Let
第一关：Choose the correct answer
第二关：将以下祈使句改为否定式
1. Come here early. 2. Ask him. 3. Let them wait for her. 4. read the book carefully. 5. Sit under the tree, please. 6. Let’s go there together.
一.以上这些以动词原形开头的句子叫 祈使句（表示请求或命令）
用客气的语气表示祈使句时，可在句首或句尾加上please.
பைடு நூலகம்
如果在句尾加please，那在please之前一定要加一个 “，”。 Please go this way. Go this way，please.
①Be a good student!做个好学生！ ②Be quiet,please. 请安静. ————————.