英语学习的过程中需要很多的积累单词和学会语法，主语从句的引导词 主语从句一般由连词that和whether、连接代词或连接副词与关系代词型what引导。下面是记者给大伙推荐的英语从句学习内容，大伙可以作为学习的参考。
1 what引导的主语从句
在what引导的主语从句中，what在从句中可作主语宾语表语或定语，从句用陈述语序。
What she saw frightened her.她看到的事情吓了她一跳。
What was once regarded as impossible has now become a reality.过去被觉得不可能的事情，目前已经变成了现实。
What struck me was that they have all suffered a lot.让我印象非常深的是他们受过不少苦。
What you did added to our difficulty.你的所作所为为大家增加了困难。
What surprised us was that he didn’t come to the meeting!让大家吃惊的是，他居然没参加会议。
However, what I did know was that my girlfriend thought I smelt terrible.
然而，我的的确确了解，我的女友感觉我身上的味非常难闻。
注意：翻译时可先翻译从句中what后面的成分，再翻译what。将what译为“的…”。
其他类似使用方法有whose, whom, which, whoever, whomever, whichever,whatever等。这类词起连接用途，在主语从句中担当肯定成分。
Whatever we do is to serve the people. 大家不管做什么都是为人民服务。
2 that引导的主语从句
that引导主语从句时，无意义，不作成分，只起连接用途。不可省略。
That you will win the medal seems unlikely.你想获得奖牌是不可能的。
That you are so indifferent bothers me.你这样冷淡使我非常烦恼。
That she survived the accident is a miracle.她在事故中幸免于难真的是个奇迹。
3 Whether/if引导的主语从句
whether引导的主语从句可放句首或句末，但if引导的主语从句只能放在句尾，前面需用it作形式主语。
Whether she is coming or not doesn’t matter too much.他来不来都不重要。
It is unknown whether/if he has agreed to my plan. 不了解他是不是已赞同我的计划。
4 when/where/why/how引导的主语从句
这四个词起连接用途，有含义，可充当状语。
Why they suddenly disappeared stills remains a mystery. 它们为何忽然消失还是个谜。
5 it作形式主语的主语从句
1)It is/was +形容词+主语从句
It is quite likely that there will be a storm. 非常可能要有暴风雨。
2)It is/was +名词+主语从句
It is a good thing when we shall have our sports meeting.
什么时间举行运动会还是个问题。
3)It is/was/has been +过去分词+主语从句
It has been decided where we are to hold the meeting.大家开会的地址已经决定了。
4)It +不及物动词+主语从句
It happened that I wasn’tthere that day. 碰巧那天我不在那儿。
It seems that he’s been here for several years.仿佛他已在这儿好几年了。
1)当主语从句出目前感叹句中时，一般用it作形式主语
What a pity it is that you can’t stay for dinner!你不可以留下来吃饭多遗憾啊!
2)在“It doesn’t matter how/whether …”结构中it作形式主语
It doesn’t matter whether he is wrong or not. 他是对还是错没多大关系。
习题
1 _____ made him surprised greatly.
A What he said B. What did she say C. What said she D. What she did say
单句改错
2 That I have seen today has made a deep impression on me.
3 That we are doing today is more than donating some money.
4 What he was able to come made us happy.
依据汉语意思完成句子
5大家得不到的看着一直比大家拥有些要好。
__________________________________ always seems better than what we have.
6 给我印象最深刻的是这么小的男生拉小提琴拉得这么好。。
______________________________such a little b宾语oy could play the violin so well.
答案 1 A 主语从句用陈述语序。 2 That改成What，what在主语从句中作宾语
3 That改成What，what在主语从句中作宾语
4 What改成That,That无意义 5 What we can’t get 主语从句
6 What impressed me most was that
以上就是英语主语从句学习内容的推荐，期望可以给大伙在学习的过程中带来帮助。
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