高考英语语法复习之主语从句+课件-2026届高考英语一轮复习专项

这是一份高考英语语法复习之主语从句+课件-2026届高考英语一轮复习专项，共16页。PPT课件主要包含了试比较，连接词，主语从句，it充当形式主语，that从句后置，what，who，which，whose，whoever等内容，欢迎下载使用。
His wrds annyed the bss.
→What he said annyed the bss.
A bicyclist shuld wear a helmet.
→Whever rides a bicycle shuld wear a helmet.
从以上例句可以看出，主语从句即一个完整的句子充当另一个句子的主语，作用相当于一个名词词组。
It is knwn t all.Light travels faster than sund.
That light travels faster than sund is knwn t all.
连接词的作用：1.连接作用2.在从句中充当或不充当成分
1.连词that引导的主语从句
2.what, wh, which, whse等疑问代词引导的主语从句
3.whever, whichever等连接代词引导的主语从句
4.when, why, where, hw疑问副词引导的主语从句
5.whether引导的主语从句，表示“是否”
That he survived the accident was a wnder.=_____________________________________
It was a wnder that he survived the accident.
主语从句中的that：连接作用，不充当任何成分，没有实际意义
It 充当形式主语(主语从句后置)的三种常见形式：
（1）It+be+形容词/名词+that从句
（2）It+be+动词过去分词+that从句
（3）It+动词+that从句
It is pssible that he has lst cnfidence.他可能已经失去信心了。
It is reprted that a strng snwstrm claimed six lives and injured 500 in Japan last week.据报道，在上周日本的一场暴风雪中有6人丧生，500人受伤。
It turned ut that the methd didn’t wrk at all.结果证明那个方法根本行不通。
What he saw and heard during the trip impressed him.他在这次旅途中的所见所闻给他的印象很深刻。
Wh will be elected president isn’t clear nw.谁会当总统，现在还不清楚。
Which f them will be elected mnitr f ur class makes n difference.他们中谁当选为我们的班长没什么差别。
Whse fault it is desn’t matter.是谁的过错没有关系。
3.whever, whatever等连接代词引导的主语从句
Whever wins the presidential electin will run int the same prblems.不论谁在这次总统大选中获胜都会遇到相同的问题。
Whatever is wrth ding at all is wrth ding well.凡是值得做的事情都值得做得做好。
4.why, where, hw, when等疑问副词引导的主语从句
Why he canceled the visit isn’t knwn.他为什么取消这次访问还不清楚。
Where students are placed depends n what they want t study.学生被安排在何处取决于他们想学什么。
Hw he managed t cllect enugh funds in such a shrt time was unknwn.他怎样在这么短的时间内筹集到足够资金还不清楚。
Whether a prducts sells well r nt depends n its quality.一个产品是否畅销取决于它的质量。
主语从句中的whether：连接作用，不充当任何成分，有实际意义“是否”，放句首不用if
_________ is still unknwn.
A. Whether he can attend the meeting
B. Whether can he attend the meeting
C. If he can attend the meeting
D. If can he attend the meeting
句意：他是否出席会议还不知道。解析：疑问句在从句中都用陈述句词序，位于句首时只能用whether表示“是否”。正确答案为A
2.It is still under discussin _________ the ld bus statin shuld be replaced with a mdern htel r nt.
句意：是否用一座现代化的宾馆来替代旧车站还正在讨论中。解析：本题考查主语从句。Whether r nt或whether…r nt可用来引导名词性从句。正确答案为A。注意：whether可用于动词不定式之前、介词之后、名词之后，可引导主语从句、表语从句等；而if不可
3. _________ sme peple regard as a drawback is seen as a plus by many thers.
句意：被很多人视为缺点的东西，被另一些人看作是有利因素。解析：此处what引导主语从句并在从句中作宾语。正确答案为B。
4. _________ Mr. Smith cmes frm is still a puzzle t us.
句意：史密斯先生是哪里人对我们来说还是个谜。解析：where表示地点。正确答案为B，容易误选A。
5. _________they were in the reading rm that day.
A. It happened that
B. It was happened that
C. That happened
D. It happened t
句意：碰巧那天他们在阅览室。解析：句型It happens/ happened that的意思是“碰巧……”，it为形式主语，that之后的从句是真正的主语。正确答案为A。