(
课件网) Unit 4 The Earth Section 4 Extending and developing competencies 把...变成=change ... into 在...的北部 for+一段时间，表持续的时间 hundred与具体数字连用不加s， 与of连用加s home, here, there前不用冠词 表到达 ①arrive in/at ②get to ③reach直接接地点 在19世纪00年代 砍倒 dis-否定前缀 appear出现，disappear消失 一群 -ist表人后缀 science科学，scientist科学家 在...中间 =in the centre of as...as中间接原级，“与...一样” 否定形式：not as/so...as，“与...不一样” 注：as long as只要，as soon as一...就 continue to do sth. 继续做某事 thanks to多亏；由于 thanks for感谢 hundres of millions of 数以亿计的 help sb. (to) do sth. help sb. with sth. provide sb. with sth. provide sth. for sth. 几种常见的普通不定代词的用法辨析 (1) little, a little, few 与 a few 很少;几乎没有(表否定) 几个;一点儿(表肯定) 修饰可数名词 few a few 修饰不可数名词 little a little 例句 Don't worry! There is a little time left. 别着急! 还有一点儿时间。 He has a few friends here, but he has few good friends. 在这里他有几个朋友,但是几乎没有好朋友。 随堂练习：单项选择 1.My father has many books, but he has_____ English books. A. little B. a little C. few D.a few 2. Just _____ water, please. A. a few B. few C. a little D. little 3.I have _____ friends. I get lone sometimes. A. a few B. few C. a little D. little 4.This school has _____ English teachers. A. little B. a little C. few D.a few (2) one 与 it 相同点 单词 用法 例句 为了避免同一名词重复使用,常用 one 或 it 来代 替前面提到的某个单数名词 one one 所代替的是前面提到的同类事物,但不是同一个 I can't find my pen. I think I must buy a new one. 我找不到我的钢笔了。我想我必须买一支新的。 it it 所代替的是前面提到的那个特指的事物 I bought a new pen yesterday, and I gave it to my sister. 我昨天买了一支新钢笔,我把它给我妹妹了。 随堂练习：单项选择 1.Do you have toys I'd like to buy___for my cousin. A.it B.one C.them 2.—I'm a little hungry Daddy. —See the cupcakes on the plate，but you can only take_____， dinner is ready soon. A．it B．one C．this 3.I can't find my ticket．I think I have lost _____ ． A．it B．one C．at D．on (4) both, all, neither, none, either 与 any 之一 都 都不 适用范围 两者 either both neither 三者或以上 any all none 固定短语 both … and …(连接两个主语,谓语动词用复数) either … or …(连接两个主语,谓语动词遵循就近原则) neither … nor …(连接两个主语,谓语动词遵循就近原则) 注意： 1). both 的否定词是neither , all的否定词是none. 2).both of 作主语时,谓语动词用复数. neither of作主语时, 谓语动词用单/复数. Neither of the answers _____(be)right . Both of my parents _____(be)workers. is/are are 3).词组 A) both …and …连接两个主语时,谓语动词用复数. 同义词组:not only …but also … 反义词组: neither … nor … 如：Not only you but also she likes watchingTV. = Both you and she like watching TV . = You like watching TV , _____ _____she . so does B) either …or … 或者……或者…… , neither…nor… 既不……也不…… 连接两 个主语时,谓语动词实行就近原则. 如：Neither you nor he _____ (be ) r ... ...
