八年级上册英语语法讲解与练习Word文档格式.docx

1、但以下几种情况不能用begin .1） 创办，开办： He started a new bllkshop last month.2） 机器开动： I cant start my car.3） 出发，动身： I will start tomorrow morning.5. over 介词，多于，超过，在以上（表示数目、程度）= more thanMy father is over 40 years old.在之上，与物体垂直且不接触，与 under 相反。 There is a map over the blackboard.超过： I hear the news over the radio.

2、 遍及： I want to travel all over the world.6. too many 太多，后接可数名词复数： Mother bought too many eggs yesterday.too much 太多，修饰不可数名词，修饰动词作状语。 We have too much work to do. Dont talk too much.much too 太，修饰形容词或副词。The hat is much too big for me. Youre walking much too fast.分辨三者的口诀： too much, much too, 用法区别看后头： m

3、uch 后接不可数， too 后修饰形或副。too many 要记住，后面名词必复数。7. because of 介词短语，因为，由于，后接名词、代词或动名词，不能接句子。He cant take a walk because of the rain.because 连词，因为，引导状语从句，表示直接明确的原因或理由。I dont buy the shirt because it was too expensive. Unit 2 How often do you exercise?1. how often 多久一次，用来提问动作发生的频率。回答用：once，twice, three time

4、s 等词语。How often do you play sports? Three times a week.how long 多长，用来询问多长时间，也可询问某物有多长。How long does it take to get to Shanghai from here? How long is the ruler?how for 多远， 用来询问距离，指路程的远近。 How far is it from here to the park? Its about 2 kilometers.2. free 空闲的，有空的， 反义词为 busy. be free 有空，闲着，相当于 have ti

5、me.Ill be free next week. = Ill have time next week. 还可作“免费的、自由的”解。be free to do sth. 自由地做某事。The tickets are free. Youre free to go or to stay.3. How come？ 怎么会？ 怎么回事？表示某件事情很奇怪，有点想不通；可单独使用，也可引导一个问句， 相当于疑问句 why, 但 how come 开头的特殊疑问句使用的仍然是陈述语序。How come Tom didnt come to the party? = Why didnt Tom come t

6、o the party?4. stay up late 指“熬夜到很晚，迟睡”。 Dont stay up late next time. stay up 指“熬夜，不睡觉”。 He stayed up all night to write his story.5. go to bed 强调“上床睡觉”的动作及过程，但人不一定睡着。I went to bed at eleven last night.go to sleep 强调“入睡，睡着，进入梦乡”。She was so tired that she went to sleep soon.6. find + 宾语 +名词, 发现 ： We

7、have found him （to be） a good boy.find + 宾语 + 形容词， 发现： He found the room dirty.find + 宾语 + 现在分词， 发现 ： I found her standing at the door.7. percent 百分数， 基数词 + percent： percent 没有复数形式，作主语时，根据所修饰的名词来判断谓语的单复数。 Forty percent of the students in our class are girls. Thirty percent of time passed.8. more tha

8、n 超过，多于，不仅仅， 相当于 over. 在句型转换中考查两者的同义替换。反义词组为：less than. I lived in Shanghai for more than / over ten years.9. afraid 形容词， 担心的，害怕的，在句中作表语，不用在名词前作定语。Im afraid we cant come here on time. be afraid of sb / sth 害怕某人 / 某事； be afraid of doing sth. 害怕做某事。Some children are afraid of the dark. Dont be afraid

9、of asking question.Im afraid + 从句 （恐怕，担心）： Im afraid I have to go now.10. sometimes , sometime, some times , some time 的区别：sometimes 频度副词， 有时。表示动作发生的不经常性，多与一般现在时连用，可位于句首、句中或句末。Sometimes I get up very early. -How often do you get up?sometime 副词，某个时候。 表示不确切或不具体的时间，常用于过去时或将来时，对它用疑问词when.I will go to Sh

10、anghai sometime next week. -When will you go to Shanghai next week?some times 名词词组， 几次，几倍。其中time 是可数名词，对它提问用how many times.I have read the story some times. -How many times have you read the story?some time 名词短语， 一段时间. 表示“一段时间”时，句中谓语动词常为延续性动词，提问时用 How long.I ll stay here for some time. -How long wil

11、l you stay here?Unit 3 Im more outgoing than my sisterlaugh v. & n. 笑We all laughed loudly when she made a joke. 她说了个笑话，我们都大声笑起来。We all laughed at his joke. 听了他的笑话我们都笑起来。He laughs best who laughs last. 谁笑在最后，谁笑得最好。/不要高兴得太早。（与at连用）嘲笑Dont laugh at him. 别嘲笑他。People have often laughed at stories told by

12、 seamen. 人们常常嘲笑海员所讲的故事。Everyone laughed at his foolish antics. 大家都笑他那种愚蠢的滑稽动作。笑；笑声 We had a good laugh at his joke. 我们被他的笑话逗得哈哈大笑。though conj. 虽然；纵然；即使；尽管 = althoughThough it was raining，he went there. 虽然当时正下着雨，他还是到那里去了。Though he was poor he was happy. 虽然他很穷却很快乐。注意：不能受汉语的影响，在though引导的从句后使用but。如：Thou

13、gh he was poor，but he was happy.（误）though adv. 不过，可是，然而，常用于句末，用逗号隔开。Jim said that he would come, he didnt , though. 语法讲解：形容词与副词的比较级大多数形容词（性质形容词）和副词有比较级和最高级的变化，即原级、比较级和最高级，用来表示事物的等级差别。原级即形容词的原形，比较级和最高级有规则变化和不规则变化两种。1规则变化单音节词和少数双音节词，加词尾-er，-est来构成比较级和最高级。构成法原级比较级最高级一般单音节词末尾加-er，-esttall（高的）great（巨大的）tallergreatertallestgreatest以不发音的e结尾的单音节词和少数以-le结尾的双音节词只加-r，-stnice（好的）large（大的）nicerlargernicestlargest以一个辅音字母结尾的闭音节单音节词，双写结尾的辅音字母，再加-er，-estbig（大的）hot（热的）biggerhotterbiggesthottest“以辅音字母