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1、,Unit 2 Topic 2 I must ask him to give up smoking. Zhou Junfeng,一、重点短语 1.stay up late 2.be bad for 3.be good for 4.too much 5.do morning exercises 6.keep fingernails long 7.play sports right 8.go to school without breakfast 9.have a bath 洗澡 10.take a fresh breath 呼吸新鲜空气,熬夜,不吃早餐去上学,对-有害,对-有益,进行适当的体育锻
2、炼,长长指甲,做早操,太多,11 read -about- 12 ask sb ( not) to do 13 give up sth doing sth 14 read in the sun 15 throw litter about 16 on the lawn 17 put-into- 18 exercise on an empty stomach 19 get into 20 keep the air clean and fresh 21 wash hands before meals 22 potato chips as we know,读关于-,在太阳底下看书,众所周知,炸薯条,饭
3、前洗手,保持空气清新,空腹锻炼,放弃某事,进入,把-放入-,在草坪上,叫-做（不做）某事,乱扔垃圾,二、重点句型 1 Staying up late is bad for your health. 2 It will keep you active during the day. 3 Different foods help us in different ways 4 If we eat too little or too much food- 5 It is necessary for us to have healthy eating habits .,三、语法学习 1 情态动词must
4、及其否定形式 must not must 译为“必须做-” , 其否定意义“不必做-”，用dont have to 表示，而不用must not 。如： Must I finish it tonight? No, you dont have to./ No, you neednt. 而must not 译作“禁止做-”。如： You must not throw litter about. Dont throw litter about.别到处乱扔垃圾。,2动名词,1.动名词短语表单件事情做主语，已经名词化相当于名词，不是动作，谓语用单数： Getting up early is good f
5、or us. Going to bed late is bad for our health. Playing sports right after meals is bad for our health. Breakfast gives you energy for the morning. Water is necessary for our health. 2.不只一件事情做主语，谓语用复数： Healthy eating habits and running are good for us. Water and rice are necessary for our health. 3.
6、使用动名词做宾语的动词practice/mind/enjoy/love/keep+doing sth/sth,1(13河南）-Dad, must we wait until the light becomes green? -Yes, Im afraid we _. Thats the traffic rule. Acan Bmay Chave to Dneed,2（11河南）_ you wait a few more minutes? Itll be your turn soon. A. Must B. Should C. Could D. Might 3 (10 安徽） -What wil
7、l the weather be like tomorrow? -It be rainy，cloudy or sunny. Who knows? A. must B .might C .shall D.should 4（11江西）The work is too hard for him. He _ finish it on time. A. cant B. mustnt C. shouldnt D. neednt 5 (12信阳模拟） He eats _food, so he is_fat. A much too;too much B too much ; much too C much to
8、o;too much D too much;too many,c,c,B,A,B,Grammar focus,I must ask him to give up smoking. You must not throw litter around. he thinks smoking can help him relax. It may cause cancer. May I borrow your newspaper and show it to my father?,Key sentences,Staying up late is bad for your health. How terri
9、ble! Dont walk on the lawn. Its necessary for us to have healthy eating habits,Thank you,Staying up late is bad for your health.熬夜有害健康。 stay up late熬夜 be bad for对-有害。 be good for-对-有好处 3.staying up late -动名词作主语。 当我们需要一个动词充当主语时， 常用此动词的动名词（即doing）形式。如： Playing basketball is good for your heath. Readin
10、g in bed is bad for your eyes.,It will keep you active during the day.它会使你在白天保持活力。 keep sth/sb .+adj.保持某物/某人在某种状态。如： keep your fingernails clean.保持你的指甲干净。 keep our streets clean.让街道保持干净。,little 少得几乎没有，表否定，修饰不可数名词。 a little有一些，表示肯定，修饰不可数名词。 与 little ，a little类似的用法的还有 few， a few 。 few少得几乎没有，表否定，修饰可数名词
11、。 a few有一些，表示肯定，修饰可数名词。,be necessary for-对-来说是必不可少的 如： Sunshine is necessary for our life.阳光对于我们的生活来说是必不可少的。 Food is necessary for life.食物是生命所必需的,It is +adj+for sb to do sth与It is+adj+of sb to do sth有何区别？ 若形容词是描述人的性格、特征、品质的，如kind，good，nice，right，wrong，clever，careless，polite，foolish等，用of sb. Its very
12、 kind of you to help me. 你能帮我，真好。 若形容词是描述事物，不是对不定式行为者的品格进行评价，用for sb，这类形容词有difficult，easy，hard，important，dangerous，（im）possible等。 Its very dangerous for children to cross the busy street. 对孩子们来说，穿过繁忙的街道很危险。,Choose the best answers:,1.You must give up _. Its bad for your health. A. to smoke B. smoke
13、C. smoking D. smokes 2. Throwing litter about is a bad habit. You had better _. A. to give up it B. to give it up C. giving it up D. give it up 3. Tom fell tired. The doctor asked him _ too long. A. to work B. doesnt work C. works D. not to work 4. You _ take your cat to the school. A. cant B. may not C. mustnt D. must 5. _ eat that fish. Its bad. A. Dont B. Do C. Is D. Isnt 6. You are so careless. You _ more careful next time. A. must are B. mustnt are C. must be D. mustnt be,C,D,D,C,A,C,
