英語學習的過程中需要大量的積累單詞和掌握語法，主語從句的引導詞 主語從句通常由連詞that和whether、連接代詞或連接副詞以及關系代詞型what引導。下面是小編給大家分享的英語從句學習內(nèi)容，大家可以作為學習的參考。

1 what引導的主語從句

在what引導的主語從句中，what在從句中可作主語賓語表語或定語，從句用陳述語序。

What she saw frightened her.她看到的事情嚇了她一跳。(what在從句中作賓語)

What was once regarded as impossible has now become a reality.曾經(jīng)被認為不可能的事情，現(xiàn)在已經(jīng)變成了現(xiàn)實。(what在從句中做主語)

What struck me was that they have all suffered a lot.讓我印象很深的是他們受過很多苦。(what在從句中做主語)

What you did added to our difficulty.你的所作所為為我們增加了困難。(what在從句中做賓語)

What surprised us was that he didn’t come to the meeting!讓我們吃驚的是，他竟然沒有參加會議。(what在從句中做主語)

However, what I did know was that my girlfriend thought I smelt terrible.

然而，我的的確確知道，我的女朋友覺得我身上的味很難聞。(did起強調(diào)作用)

注意：翻譯時可先翻譯從句中what后面的成分，再翻譯what。將what譯為“的…(事情東西樣子等)”。

其他類似用法有whose, whom, which, whoever, whomever, whichever,whatever等。這些詞起連接作用，在主語從句中擔當一定成分。

Whatever we do is to serve the people. 我們無論做什么都是為人民服務。(whoever在從句中做賓語)

2 that引導的主語從句

that引導主語從句時，無意義，不作成分，只起連接作用。不可省略。

That you will win the medal seems unlikely.你想獲得獎牌是不可能的。

That you are so indifferent bothers me.你如此冷淡使我很煩惱。

That she survived the accident is a miracle.她在事故中幸免于難簡直是個奇跡。

3 Whether/if引導的主語從句

whether引導的主語從句可放句首或句末，但if引導的主語從句只能放在句尾，前面需用it作形式主語。

Whether she is coming or not doesn’t matter too much.他來不來都無關緊要。

It is unknown whether/if he has agreed to my plan. 不知道他是否已同意我的計劃。

4 when/where/why/how引導的主語從句

這四個詞起連接作用，有含義，可充當狀語。

Why they suddenly disappeared stills remains a mystery. 它們?yōu)槭裁赐蝗幌н€是個謎。

(why在從句中做狀語)

5 it作形式主語的主語從句

1)It is/was +形容詞+主語從句

It is quite likely that there will be a storm. 很可能要有暴風雨。

2)It is/was +名詞+主語從句

It is a good thing when we shall have our sports meeting.

什么時候舉行運動會還是個問題。

3)It is/was/has been +過去分詞+主語從句

It has been decided where we are to hold the meeting.我們開會的地點已經(jīng)決定了。

4)It +不及物動詞(seems/happens/appears…)+主語從句

It happened that I wasn’tthere that day. 碰巧那天我不在那兒。

It seems that he’s been here for several years.好像他已在這兒好幾年了。

1)當主語從句出現(xiàn)在感嘆句中時，一般用it作形式主語

What a pity it is that you can’t stay for dinner!你不能留下來吃飯多遺憾啊!

2)在“It doesn’t matter how/whether …”結構中it作形式主語

It doesn’t matter whether he is wrong or not. 他是對還是錯沒多大關系。

習題

1 _____ made him surprised greatly.

A What he said B. What did she say C. What said she D. What she did say

單句改錯

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.

根據(jù)漢語意思完成句子

5我們得不到的看起來總是比我們擁有的要好。

__________________________________ always seems better than what we have.

6 給我印象最深刻的是這么小的男孩拉小提琴拉得這么好。。

______________________________such a little b賓語oy could play the violin so well.

答案 1 A 主語從句用陳述語序。 2 That改成What，what在主語從句中作賓語

3 That改成What，what在主語從句中作賓語

4 What改成That,That無意義 5 What we can’t get 主語從句

6 What impressed me most was that

以上就是英語主語從句學習內(nèi)容的分享，希望可以給大家在學習的過程中帶來幫助。

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