Unit 1 The lion and the mouse -介詞用法和情態動詞用法詳解及練習介詞with的用法及與use, and的轉換及練習1. with和and的用法（1）with介詞，表示和，后面可接名詞或名詞的賓格。如：I live with my parents.我和父母住在一起。Little dog, run with me!小狗，和我一起跑吧！（2）and是連詞，連接兩個并列的單詞、短語或句子。如：I like red and black,我喜歡紅色和黑色。He likes playing football and watching TV,他喜歡踢足球和看電視。（3）當with表示和某人一起時，可用and進行改寫。如：He goes to school with me every day.他每天和我一起上學。He and I go to school every day.他每天和我一起上學。2. with和use的用法（1） with表示使用某種方式。use,表示使用兩者可互換。如： Chinese use chopsticks to have meals.中國人使用筷子來吃飯。Chinese have meals with chopsticks.中國人使用筷子來吃飯。I use computer to write stories.我用電腦來寫故事。I write stories with the computer.我用電腦來寫故事。（2） with是介詞，而use是動詞。經典例題：1. The mouse made a big hole in the net with his teeth.（用 use 改寫）________________________________________________________2. I use the computer to play games.（用 with 改寫）________________________________________________________3. I play football with my friends every week.（用 and 改寫）________________________________________________________4. People can use the phone to talk with others.（用 with 改寫）________________________________________________________5. Su Hai and Liu Tao go shopping on Sundays.（用 with 改寫）________________________________________________________6. I read books with my parents in the morning.（用 and 改寫）________________________________________________________情態動詞can的用法1.表示能力（體力、知識、技能等）.Can you lift up this heavy box?（體力）你能舉起這個笨重的盒子嗎？Mary can speak three languages.（知識） 瑪麗會說三種語言。Can you skate?（技能） 你會溜冰嗎？（可用be able to代替）Can只有一般現在時和一般過去式；而be able to則有更多的時態。Ill not be able to come this afternoon.我今天下午不能過來。注：當表示“經過努力才得以做成功某事”時應用be able to,不能用Can。如：He was able to go to the party yesterday evening in spite of the heavy rain.盡管昨晚下著暴雨，他還是來了聚會。2.表示請求和允許。Can I go now? 我現在可以走嗎？Yes, you can. / No, you can. 是的，你可以。/ 不，你不行。此時可與may互換。在疑問句中還可用could, might代替，并不是過去式，只是語 氣更委婉，不能用于肯定句和答語中。一 Could I come to see you tomorrow? 我明天可以來看你嗎？Yes, you can. / No, Im atraid not. 是的.你可以。 不，你不可以。3.表示客觀可能性（客觀原因形成的能力）。Theyve changed the timetable, so we can go by bus instead.他們換了時間表，因此，我們可以乘公交車代替。This hall can hold 500 people at least. 這個禮堂至少可以容納 500 人。4.表示推測（驚訝、懷疑、不相信的態度），用于疑問句、否定句和感嘆句中。Can this be true? 這個會是真的嗎？This cant be done by him. 這不可能是他做的。How can this be true? 這怎么可能成真呢？經典例題一、選擇題。()1. Can I go fishing with you, Dad?No, you____. You____ stay at home and do your homework first. A. wont, may B. cant, mustC. shouldnt, ought D. neednt, should()2.Do you know whose dictionary it is?It____ be Li Meis. His name is on it.A. can B.mustC. should D. need()3.I cant stop smoking, doctor. For your health, Im afraid you____. A. can B. cantC. mustD. mustnt()4. Is Mr Brown driving here? Im not sure. He____come by train.A. may B. shallC. needD. must二、用can或could的相關形式填空。1.He____ swim and I____ sing.2.She____ read and draw now, but she____write five years ago.3.Liu Tao____ play basketball when he was a child.4.I____ use the mobile phone until I was fifteen years old.5. What could you do three years ago? We ____ride a bike to school.三、按要求完成句子。1.He can play the piano.否定句：_____________________________________ 一般疑問句：_____________________________________肯定回答：_____________________________________否定回答：_____________________________________ 對劃線部分提問_____________________________________ 2.你會彈吉他嗎？ 當然了。____you____ ____ guitar? Of course.3.兩年前我不會騎自行車。I____ ____ a bike two years____. 4.十年前你會寫字嗎？不，我不會。____ you____ ten years ago? No, I____. 5.五年前你不會做什么？我不會游泳和畫畫。What____ you____ five years ago? I____ swim or____. 6.They could speak English twenty years ago.否定句：_____________________________________一般疑問句：_____________________________________肯定回答_____________________________________否定回答_____________________________________對劃線部分提問_____________________________________ 答案介詞with的用法及與use，and的轉換及練習1.The mouse used his teeth to make a big hole in the net.2.I play games with the computer.3.My friends and I play football every week.4.People can talk with others with the phone.5.Su Hai goes shopping with Liu Tao on Sundays.6.My parents and I read books in the morning.情態動詞can的練習一、選擇題。1.B 2. B 3. C 4. A二、用can或could的相關形式填空1.can, can 2. can, couldnt 3. could 4. could not 5. could三、按要求完成句子。1.He cant play the piano.Can he play the piano? Yes, he can. No, he cantWhat can he do?2.Can, play the3.couldnt ride, ago4.Could, write, couldnt5.couldnt, do, couldnt, draw6.They couldnt speak English twenty years ago.Could they speak English twenty years ago?Yes,they could. / No, they couldnt.What could they do twenty years ago