八年级上册英语unit1 单词及语法讲解.ppt

Unit1 How often do you exercise?;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. My mother wants me to drink it. 我妈妈想要我喝。 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. She says it’s good for my health . 她说它对我的健康有意。 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。 Reading?English?is?good?for?studying?English. 对英语对学习英语有益/有帮助。 Reading in bed is bad for your eyes. 在床上读书对你的眼睛有害。;7. usually when I come home from school 通常是在我从学校回家时 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 I’ll try to learn English well. 我会尽量尝试学好英语的。 You must try to take more exercise. 你必须尽量多做运动。 9. I look after my health. look after 照顾 My brother is ill. I have to look after him today. 我的弟弟病了。我今天不得不照顾他。 All the students must look after the desks and chairs. 所有的学生必须照看好课桌椅。 He often helps his m