1. 含义：表示现在正在进行或一段时间正在进行的动作标志词：now, look, listen 等。2. 构成： be +V-ing 现在进行时的含义与构成He is reading a book. 3.V-ing 变化规则：1 ）一般加 ing . 如 : play----playing watch----watching2)以不发音的 e 结尾 , 去 e 加 ing. 如 : take----taking come---coming3)元 + 辅结尾 , 且是重读闭音节的单词 ,双写辅音字母 +ing. 如 :run----running swim----swimming 练习1. 写出下列动词的 ing 形式 .1.help_________ 2.come_________3.swim_________ 4.eat__________5.give________ 6.find_______7.sit ________ 8.write________ What is he doing?He is playing basketball. What is the boy doing ？He is singing. ---Is the woman writing?----No, she isn’t. She is reading a book. ----What’re they doing?----They’re swimming.----Are they swimming?----Yes, they are. ---Are they singing? ---No, they aren’t. They aren’t singing. They are dancing. Are they ____a book?No, they ____.____ are they_______ ?They’re _____. reading aren’tWhatdoingwriting Is the girl ______(get) up?No, she ______.What ___ she ______?She ___ ______.getting isn’tisdoingis sleeping 2. 否定句：直接在 be 后加 not. 如： I am writing. I am not writing.现在进行时的句式1. 肯定句 : 主语 +be +v-ing+ 其它 . 如 : I am reading a book. 3. 一般疑问句及回答 : 问句 , 直接把 be 提前 , 肯定回答 :Yes, 主语 +be 否定回答 : No, 主语 +be+not-----Are you drawing ?-----Yes,I am./No, I’m not. 一 . 用所给动词的适当形式填空 .1.Look! The cat____________(run)up the tree.2.The twins__________(have)breakfast.3.----___he ________(clean) the blackboard? ----No,he isn’t.4.Tom__________(play)the piano in the room.Please ask him to come here.5.Listen! They____________(sing)in the classroom.is runningare havingIs cleaning is playing are singing 汉译英1. 我们正在看电视 .2. 他们正在打扫教室 .3. 汤姆正在吃早饭 .4. 那对双胞胎...
