语法速成 高中版

It is likely that 很可能 It is important that 重要的是 类似的形容词还有： strange; natural; obvious; true; good; wonderful; possible; unlikely; quite; unusual; certain; evident; worth-while; surprising; interesting; astonishing, etc. 例如： 31. It is doubtful whether she will be able to come. It was really astonishing that he refused to talk to you. It is essential that he should be here by the weekend. It seems obvious that we can not go on like this. It is necessary that you （should）master the computer. It is important that a student learn English well. It’s clear that they badly need help. It is likely that a hurricane will arrive soon. 32. 类似的过去分词还有： known; estimated; expected; believed; thought; hoped; noted; discussed; required; decided; suggested; demanded; made clear; found out, etc. 例如： It is thought that he is the best player. It is estimated that the vase is 2000 years old. It is used to be thought that a new star must be due to a collision between two stars. It has not been made clear when the new road is to be opened to traffic. It is said that he was killed in the earthquake. 33. It seems （happened / appears / doesn’t matter / makes no /occurred) that （seems, appears等严格意义上来讲应该划为表语从句，但现有语法书比较混乱。） 如： It seems that they will win the game. It makes no difference whether he will attend the meeting or not. It does not matter if I missed my train. It happened that I saw him yesterday. 总结：主语从句特点

1. 主语从句的时态：不受主句的时态影响和限制。

2. 语序：陈述句语序。

巩固练习及高考真题 1. _____ as much as one-fifth of all timber harvested is not used. A. The estimate B. The estimated C. They are estimated D. It is estimated that 2. _____ some mammals（哺乳动物复数） came to live in the sea is not known. A. Which B. Since C. Although D. How 3. _____ we have achieved is attributed to （把某事归因于某人）the guidance of our parents. 4. _____ wealthy does not necessarily mean that a man is greedy. A. For the reason that he is B. Just because he is C. The reason of being D. That he is 5. ______ she had forgotten to take her notebook. A. That occurred to her B. She occurred that C. To her that occurred D. It occurred to her that