人教版八年级上册英语各单元语法

1. How often 引导的特殊疑问句 How often do you do sth ?意为“你多久做一某事？”该句型常用来询问某动作隔多久进行一次，即询问中间隔的时间长度、动作发生的频率。常见的答语是：always, usually, often, sometimes, hardly ever, three times a day, once a week, every day 等。 如： ------How often do you hike with your friends ? 你隔多久和你的朋友去远足一次？ ------Every Friday . 每周五。 ------How often do you clean your room ? 你多长时间打扫一次你的房间？ ------Often. 经常。 2. What do you/does he/she do on/in……? 句型 What do you/does he/she do on/in……? 你/他/她在……(时间)做什么？这是询问某人在某时通常干什么的句型。答语通常为I/we +动词原形+其他成分或 He/She+动词的第三人称单数形式+其他成分。如： -----What do you do on Sundays? 你在星期天干什么？ -----I often clean my house on Sundays? 我星期天经 常打扫我的房子。 -----What does your father do after supper? 你爸爸晚饭后干什么？ -----He usually goes for a walk. 他通常取散步。 对划线部分提问 1. The teacher hardly gives us a test. _____ _____ ______ the teacher give you a test? 2. I never get up before five o’clock? _____ _____ do you get up before five o’clock? 3. Li Tao often has rice for lunch. _____ _____ Li Tao often _____ for lunch? 4. I usually read English in the morning. _____ _____ you usually ______ in the morning? 5. My mother goes to see my grandparents twice a month. _____ _____ _____ your mother _____ to see your grandparents? 答案：1. How often does 2. How often 3. What does have 4. What do do 5. How often does go 情态动词shou ld 的用法 情态动词should 和can ，may ，must 一样，没有人称和数的变化，有词意，但都不能单独作谓语，必须和后面的动词原形一起构成谓语。基本意思是“应当，应该”，常用来表示建议或命令等。如： You should work harder. 你应该更努力地工作。 否定式和疑问式的构成与 can ，may...