八年级英语上册Unit2KeepinghealthyTopic2知识点汇编仁爱版

Unit 2 Keeping healthy Topic 2知识点汇编一、重点短语1. stay up late熬夜2. be bad for对-有害3. be good for对-有益4. too much太多，过分5. do morning exercises做早操6. keep long fingernails长长指甲7. play sports right进行适当的体育锻炼8. go to school without breakfast不吃早餐去上学9. have a bath洗澡10. take a fresh breath呼吸新鲜空气11. read -about-读关于-12. Renai English Post仁爱英语报13. ask sb to do叫某人做某事14. give up放弃15. read in the sun在太阳底下看书16. throw litter about乱扔垃圾17. on the lawn在草坪上18. put-into-把-放进-19. exercise on an empty stomach空腹锻炼20. get into进入21. keep the air clean and fresh保持空气清新22. wash hands before meals饭前洗手23. potato chips炸薯条二、重点句型1. Staying up late is bad for your health.熬夜有害健康。1） stay up late熬夜2） be bad for对-有害。类似的短语还有： be good for-对-有好处3） staying up late is-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.打篮球对你的身体有好处。Reading in bed is bad for your eyes.躺在床上看书对眼睛有害。Swimming is my hobby.游泳是我的爱好。2. 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 fingersails clean.保持你的指甲干净。keep our streets clean.让街道保持干净。3. Different foods help us in different ways不同的食物对我们有不同的作用. in different ways.译为“用不同的方式”。4. If we eat too littele or too much food-如果我们吃太少或太多食物-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。 a few有一些，表示肯定，修饰可数名词。5. Walking is good exercise and it is necessary for good health. 散步是很好的锻炼，它是身体健康必不可少的。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。三、语法学习1） 情态动词must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 Ifinish it tonight?No, you dont have to.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） 情态动词maymay有两种含义，表示请求允许，译作“可以”。如：May I come in ?我可以进来吗？表示推测，译作“可能”。如：You may get a headache when you work too hard.当你工作太累时你可能回感到头疼。You may get a headache when you cant get enough