2017人教版英语八年级上册第二单元unit-2知识点讲练

1、八年级上册unit 2Section A Page 91. 1. help sb. with sth. 表“在某方面帮助某人”，相当于 help sb. (to) do sth. 如： I often help my mother with housework. = I often help my mother _ _ some housework.2. on weekends = on the weekend在周末， go to the movies = go to the cinema去看电影 I often go to the movies on weekends. 3. hardly

2、与hard 的区别hardly表“几乎不”，用于否定句中。而hard有以下几种意思： 困难的 努力地 用来修饰雨或雪下得大Its raining _. I can _ see the way. Its very _ to get to school. I must study _. 4. exercise 的用法：当exercise指“操、练习”时，是可数名词，如：do morning exercises 做早操；do eye exercises; 做眼保健操；do English exercises 做英语练习题；但exercise指“锻炼，运动”时，是不可数名词。如：do some exe

3、rcise 做运动。exercise 还可作动词，指“锻炼，运动” 如：She exercises every morning. 5. sometimes = at times有时，some times 几次；sometime（将来的）某个时候； some time 一些时间 I have visited Beijing _. _ I walk to school. I will visit you _. The work is difficult, so I need _.Section A Page 101. 本单元围绕“某人多久做一次某事”。谈论的是一个人现在的行为习惯，所以本单元谈论的

4、话题主要用_ 时态。2. How often 用来问“多久一次”，回答How often问句常用下列一些频率副词： Twice a week(一周两次)； always（总是）； usually（常常）； often（经常）； sometimes（有时）； hardly ever（几乎不）； never（从不） 题：She goes to movies once a week. (对划线部分提问)_ _ _ she go to movies？【拓展】How long 问“（时间）多久”。 常用“（For）+ 一段时间”来回答 问“（长度）多长”。How much 多少（接不可数名词） 多少钱H

5、ow soon 问多快（时间），用于将来时态。常用“In +时间段”来回答。如：How soon will you come back?你将多快回来？ -In a week.一周后 与how构成的疑问词还有有：How many 多少（接可数名词复数形式）How much 多少（接不可数名词）How old 问年龄How tall 多高（人、树）How high 多高（山、楼）How far 问距离 (1) is it from your home to your school？-Its two kilometers away. (2) is the room？- Its two meters

6、wide. (3) will you stay in Beijing ? - For a month. (4) will you finish the work?-In a month. (5) do you watch TV ? - Four times a week. (6) How long do you sleep every night? = hours do you sleep every night ?4. once a week 一周一次， twice a week 一周两次，three/ four times a week 一周3/4次 一次，两次特殊记，三次以后有规律：基数

7、词+times 就可以5. be free = have time 有空，有时间 Are you free next week ? = _ you _ _ next week ?6. full 表“满的，忙的”，常见短语有：be full of 装满，充满 My schoolbag is full of books. 7. have / take a dance lesson 上一节舞蹈课 （lesson = class课） I have dance and piano lessons. 8. What kind of 用来问种类 _ dance are you learning? -Oh,

8、swing dance. 9. How about = What about 表“怎么样，好不好”，可以用来提建议。about是介词，后接动词ing. How about _ the movies next week ? ( go )10. have to 和must have to强调客观上“不得不”做某事；must指主观上“必须”做某事。have to有人称和数、时态的变化，而must没有人称或数的变化。对have to提问和否定用助动词, 而must不需要。例如：（1）He has to go there（人称数的变化） （2）He had to pay for it. (时态的变化)（

9、3）Must I finish my homework after school ? - No, you _ have to. 11.play tennis 打网球。 play 与乐器连用时，乐器前要加the。球类、棋类前不加the。 题： Play _ violin. play _ football. play chess 12. want to do sth. 想去做某事，意思相近的短语有：would like to do sth 和feel like doing sth. Section A Page 111.（1）maybe意思是“也许、可能”，相当于常位于句首, 后接句子。 （2）m

10、ay be中，意为“也许是、可能是”, 放句中，后接表语（形容词，名词等） 可转换：Maybe you are right. = You may be right.2. stay up late 熬夜 stay up late to do sth . 熬夜为了做某事 I stayed up late to watch the soccer game. 3. at least 至少 at most 最多 He plays at least twice a week.4. busy 表忙的，短语有：be busy doing sth.（正忙于做某事） Look ! He is busy _ his

11、 mother with housework. ( help )5. after school 放学后， after class 下课后， in class 在课堂上Section B page 121. want sb. to do sth 想要某人去做某事，类似的短语有：tell/ ask sb. to do sth. 要求某人去做 某事 My mother wants me _ it. ( drink )2. be good for 对有好处；be good at 擅长.，be good with 善于和某人相处，善于处理3. health 名词，健康。healthy 形容词，健康的。k

12、eep healthy保持健康 Smoking is bad for your_, you must keep _. You can eat _ food.4. have a good living habit 有好的生活习惯Section B page 131. in ones free time 在某人空余时间里 I usually watch TV in my free time. 2. ask sb. about sth. 向某人询问有关某事物 We ask the students about their free time activities. 与ask 有关的短语还有：ask

13、sb. for sth. 向某人要某物； ask sb.(not) to do sth. 要求某人（不）去做3. (the) use of 表“的使用”，如：Its about the use of the Internet. use还可以作动词，短语有：use sth. to do sth. 用某物去做某事4. fifteen percent of the students （15%的学生），百分数不用复数，后用of连接要修饰的名词。作主语时，谓语动词要与of后的名词单复数一致。 Twenty percent of milk _ ( be ) bad.5. four to six times

14、 a week 每周4至6次6. 否定句+at all，表“根本不，一点也不”。如：Some students dont exercise at all. 7. go online 上网8. surprise 动词和名词，吃惊；surprised 形容词，感到吃惊的（修饰人）；用法有：(1) be surprised + that从句： Im surprised that he got an A. (2) be surprised at sth. 对感到吃惊 I was surprised at the news. (3) be surprised to do sth. 做某事很吃惊 I wa

15、s surprised to meet him. 9. the answer to the question 问题的答案； to 表“针对”如：the key to the lock 锁的钥匙； the ticket to a concert 演唱会的票； the solution to the problem 问题的解决方法 题：You should give him a ticket a ball game. (A. at C. on D. to )10. although = though 表“虽然” 不与but连用. （关联词在英语中只要一边） 例 _ it is raining ha

16、rd, _ nobody is late for school. A. because, so B. So, that C. although, but D. although, 不填11.by = through表“通过做某事”，它们是介词，后可接动名词（动词ing） Its good to relax by using the Internet.12. the best way to do sth. 去做某事的最好方法 （不定式作后置定语） I think the best way to relax is through exercise. 13. such as 和 for exampl

17、e 都可以表“例如”，它们的区别有： such as 通常放句中，后接几个并列名词。例：I can speak many languages, English, French and Japanese. for example 可放句中，句首或句尾，后常接一个句子并与它用逗号隔开。例： , Australia was unknown14. spend time with sb. 和某人共度时光 You can spend time with your friends. Section B page 151. a 16-year-old student 用连字符构成了形容词，所以没有复数形式（y

18、ear不加s）2. more than 多于 less than 少于3. do sth. for some time 做某事持续多久 She always watches TV for more than two hours a day. 4. be afraid to do sth. = be afraid of doing sth. 害怕做某事 I am afraid to speak English in class.= Im afraid of _ English in class. 5. go to the dentist 去看牙医Section B page 161. none 和no one 的区别： none与数量有关，可回答how many，表