高中英语专题练习之it的用法

第七章 it的专项用法 i .it作为代词 1. it作为人称代词，指代前文提到事物，也可指代婴幼儿。 2. it 可以指代指示代词this, that。 3. it作“这,那"解,指心目中或上下文中的人或事。 4. it作为无人称动词的主语，表示天气、时间季节、气温、距离、环境等。 专项练习 ( ) 1. I was disappointed with the film. I had expected to be much better. A. that B. this C. one i D. it ( ) 2. -Who is knocking at the door? - -Perhaps is Jerry. A. he B. that C. it D. the man ( ) 3. Tom's mother kept telling him that he should work harder, but didn't work. A. he B. which C. she D. it ( )4,-How going? - -Everything is OK. A. Is it B. are they C. is that D. are these ( ) 5. -He was nearly drowned once. - -When was ? - -was in 1998 when he was in middle school. A. that; It B. this; This C. this; It D. that; This ii. it作形式主语 it作为形式主语,无具体意义，真正的主语由动名词、动词不定式和主语从句担任,被后置。常见句型有: 1. It is necessary (important, easy, ifcult, natural, common, interesting, pleasat..) for sb. to do sth./that... 2. It is kind (clever, brave, careful, careless, foolish, honest, nice, polite.. of sb. to do sth.3. It is no good (useless, no use, a waste of time) doing sth. 4. It is a pity (a shame) that...(主 语从句用虚拟语气表示出乎意料) 5. It is said ( reported, believed, thought, announced, estimated) that... 6. It is suggested (advised, ordered, requested.. that.. soul...主语从句用虚拟语气表达) 7. It takes sb.+-段时间十to do sth. 8. It seems (appears, happens, turns out, occurred to sb.) that... 9. It matters/doesn't matter whether 10. It is necessary( important, natural, strange, essential.. that..( should) do sth.(主语从句必须用虚拟语气) 11. It is no wonder( an honor, a fact, common knowledge) that..... 专项练习 ( )1. is a fact that Global Warming has influenced human beings' life. A. There B. This C. That D. It ( )2.It is wrong treat your mother like that. A. that you to B. of you to C. for you to D. because you ( )3.Is necessary to complete the task before National Day? A. this B. that C. it D. he ( )4.Does matter if he cant finish the job on time? A. this B. that C. he