Unit 2 Saving the Earth Topic 2九年级英语仁爱版上册课前导学（含答案）

（5）Unit 2 Saving the Earth 2. All these problems are very serious.—九年级英语仁爱版上册课前导学 一、基础知识 1.重点短语 1. _____ 结果 2. _____ 变成，转换成 3. _____ 把......变成 4. stop/prevent sb./sth. (from) doing sth. keep sb./sth. from doing sth.阻止某人/某物做某事 5. _____ 人类 6. _____ 砍倒，削减 7. cut off 切断，中断 8. a number of + 可数名词复数 + 谓语动词复数 “许多，大量” 9. the number of + 可数名词复数 + 谓语动词单数 “...的数量” 10. _____ 如此，以至于 11. _____ 形成，诞生 12. be in danger of…处于……的危险中 13. _____ 灭绝 14. plenty of 大量的 e to understand 开始理解 16. do/try one's best 尽某人最大努力 2.重点用法 1. None of us likes pollution. 我们中没有一个人喜欢污染。 ①none 可以指人,也可指物;而 no one 和 nobody 只能指人,不能指物。 ②none 后常接 of 短语,构成“none of +名词/代词”结构。none of 后接不可数名词时，谓语动词用单数；none of后接复数名词、代词、单数集合名词时，谓语动词用单、复数形式均可；no one 后不能接 of 短语，作主语时，谓语动词要用单数形式。 ③在简略答语中, no one用来回答 who 的问 句;而none 则用来回答how many 或 how much 引起的问句，不可混用。 ④nobody相当于no one,二者可用else 修饰,而 none则不可以。 Eg: Nobody/No one else knows the secret. 没有其他人知道这个秘密。 2. Everyone should care for wild animals and plant more trees. 人人应该关爱野生动物，多种树。 ①care for=take care of=look after 关心,照顾。 ②比较:everyone 和 every one a. everyone = everybody 大家、人人、每人(不定代词)，只指人，不指物，作主语时谓语动词用单数。(反意疑问句中用they 或 he 替换) b. every one 表示“ 每个人、人人”可以指人(=everybody),也可以指物,作主语时谓语动词用单数。(后可跟 of短语) 3. We should do everything we can to protect the environment. 我们应该尽一切努力保护环境。 ①everything 是不定代词,意为“每一事物,一切，所有事物”，作主语时谓语动词用单数。 ②everything后面的定语从句中, we can 后省略了谓语动词 do。 ③to protect the environment 保护环境,动词不定式作目的状语。 二、练习 1.—We can _____ a room for six children in the summer vacation. —That would be helpful. Thank you. A.avoid B.invent C.provide D.correct 2.—I have trouble with my English. —John’s English is the _____ in our class. You can ask him for help. A. worst B. best C. fastest D. slowest 3.—At lunch time, if you sit by yourself, will you feel lonely —Maybe I will. If so, I might join _____at their table. A.everyone B.anyone C.someone D.none 4.Be open to learning new lessons, _____ they may be different from the lessons you learned yesterday. A.so B.but C.or D.though 5.—Why wouldn’t the old lady like to eat together with her children —She _____ them to see how her hands shake. A.punishes B.prefers C.hates D.expects 答案以及解析 一、基础知识 1.重点短语 1. as a result 结果 2. change into 变成，转换成 3. turn into 把......变成 4. stop/prevent sb./sth. (from) doing sth. keep sb./sth. from doing sth.阻止某人/某物做某事 5. human beings 人类 6. cut down 砍倒，削减 7. cut off 切断，中断 8. a number of + 可数名词复数 + 谓语动词复数 “许多，大量” 9. the number of + 可数名词复 ... ...