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Unit1 How often do you exercise? 1. 疑问词how的用法 (1) 怎样，用什么手段，方法/交通工具 How are you? / How is she? How did he do it? / I don’t know how to swim. How do you come to school? (2) 情况如何（指身体健康状况） How are you? (3) how many，how much表示“多少” how many后接可数名词复数，how much接不可数名词。 How many pens do you want? How much water do we drink every day? (4) how often是对动作发生的“次数”提问,询问的是 频率“多久一次” 回答可以是：Every day. / Once a week. / Three times a week. / Often. / ... How often do you play tennis? How often do you surf the Internet. (5) How old...? 询问年龄 How old are you? I am five. (6) How about…? ……如何？ ……怎么样？ How about going to the movies? 2. time表示不可数名词，意为“时间”。 表示可数名词，意为“次数，倍数” What time is it? I go to the movies three times a week. 注意“次数”的表达方法 一次 once， 两次 twice，三次或三次以上用基数词加上times： three times、five times、one hundred times. 表示“……几次”的表达方法是： once a day/ a week/ a month/ a year twice a day/ a week/ a month/ a year 3. exercise v/n shop v/ n He often exercises on weekends. We often do / take exercise on weekends. We often shop on weekends. There are many shops in the neighborhood. 4. as for意为“就……而论”，“至于” As for fruit，I eat it sometimes. As for him，I never want to see him here. 至于他，我永远不希望在这里见到。 5. want to do sth. 想要做某事 want sb. to do sth. 想要某人干某事 Do you want to go to the movies with me？ 你想和我一起去看电影吗？ I want you to help me with my math. 我想要你帮我学数学。 有很多动词后面用这种结构做动词的复合宾语： ask sb. to do sth. 叫某人做某事 tell sb. to do sth. 告诉某人去做某事 help sb. (to) do sth. 帮助某人做某事 6. be good for...表示“对……有益（有好处）” 其反义为：be bad for... 对……有害/无益 　Its good for us to do more reading. 多读书对我们有好处。 Drinking milk is good for your health. 喝牛奶对你的健康有益。 7． When + 从句 当……时候 I often stay at home when it is rainy. 8. I try to eat a lot of vegetables. try to do sth. 尽量/尽力做某事 9. I look after my health. look after 照顾 10. My healthy lifestyle helps me get good grades. 我健康的生活方式帮助我取得好的成绩。 help sb.(to) do sth.帮助某人做某事 11. Good food and exercise help me to study better. 好的食物和运动帮助我学习得更好。 help sb. (