He didn't turn his head until I shouted at the top of my voice.
直到我用最大的嗓門喊他時他才回過頭來.
原句是這樣的.
這一句話是一句否定詞開頭的倒裝句,一般用來表示強(qiáng)調(diào).
主句就是全句的 至少是主語和謂語所在的地方,所以如果你對句子的結(jié)構(gòu)熟悉的話你可以找主語謂語來確定主句.
但是更簡單的方法是找引導(dǎo)詞 which when where whose that if whether等等,跟在引導(dǎo)詞后面的就是從句.
比如,
你給出的例句它可以改寫成: He turned his head when I shouted at the top of my vioce.
或者When I shouted at the top of my voice, he turned his head.意思不變.
這是一個when引導(dǎo)的時間狀語從句,意思是when后面的從句在主句中充當(dāng)狀語的成分.
在這句中 主語是 He 謂語是turned,主句就是He turned his head ,
從句由when 引導(dǎo),從句就是I shouted at the top of my vioce.
然后回到Not until i shouted at the top of my voice did he turn his head.這句話,
主句是he turn his head,從句就是 i shouted at the top of my voice .
只不過這里是個倒裝句型,要注意語法.
如果你難以判斷這種類型的主句和從句,那就建議你先將它改寫成when之類的引導(dǎo)詞引導(dǎo)的正常語序的句子,然后再用'when'后面的就是從句,這樣的法則就可以了.
知識拓展：
部分倒裝是指將謂語的一部分如助動詞或情態(tài)倒裝至主語之前.如果句中的謂語沒有助動詞或
情態(tài)動詞,則需添加助動詞do, does或did,并將其置于主語之前.
1、句首為否定或半否定的詞語,如no, not, never, seldom, little, hardly, at no time,
in no way, not until… 等.
　　Never have I seen such a performance.
　　Nowhere will you find the answer to this question.
　　Not until the child fell asleep did the mother leave the room.
　當(dāng)Not until引出主從復(fù)合句,主句倒裝,從句不倒裝.
注意：如否定詞不在句首不倒裝.
　　I have never seen such a performance.
　　The mother didn't leave the room until.
2、以否定詞開頭作部分倒裝
如 Not only…but also, Hardly/Scarcely…when, No sooner… than
　 Not only did he refuse the gift, he also severely criticized the sender.
　 Hardly had she gone out when a student came to visit her.
　 No sooner had she gone out than a student came to visit her.
典型例題
No sooner___ than it began to rain heavily.
A. the game began　　　　　 B.　has the game begun
C. did the game begin　　　 D.　had the game begun
答案D. 以具有否定意義的副詞放在句首時,一般采用倒裝句(謂語前置).這類表示否定意義
的詞有never, seldom, scarcely, little, few, not, hardly, 以及not only…but
(also), no sooner…than, hardly… when scarcely… when　等等.
注意：只有當(dāng)Not only… but also連接兩個分句時,才在第一個分句用倒裝結(jié)構(gòu).如果置于句
首的Not only… but also僅連接兩個并列詞語,不可用倒裝結(jié)構(gòu).
Not only you but also I am fond of music.
3、so, neither, nor作部分倒裝
表示“也”、“也不”的句子要部分倒裝.　　　　
　 Tom can speak French. So can Jack.
　 If you won't go, neither will I.
典型例題
　 ---Do you know Jim quarreled with his brother?
　 ---I don't know, _____.
　 A. nor don't I care　　B. nor do I care　　C. I don't care neither　　D. I don't care also
答案：B. nor為增補意思"也不關(guān)心",因此句子應(yīng)倒裝.A錯在用 don't 再次否定, C neither 用法不
對且缺乏連詞. D缺乏連詞.
注意：當(dāng)so引出的句子用以對上文內(nèi)容加以證實或肯定時,不可用倒裝結(jié)構(gòu).意為“的確如此”.
　 Tom asked me to go to play football and so I did.
　 ---It's raining hard.　　　---So it is.
4、only在句首要倒裝的情況
Only in this way, can you learn English well.
　 Only after being asked three times did he come to the meeting.
　 如果句子為主從復(fù)合句,則主句倒裝,從句不倒裝
　 Only when he is seriously ill, does he ever stay in bed.
5、as, though 引導(dǎo)的倒裝句
as / though引導(dǎo)的讓步從句必須將表語或狀語提前 （形容詞, 副詞, 分詞, 實義動詞提前）.
注意：
1）句首名詞不能帶任何冠詞.
2）句首是實義動詞, 其他助動詞放在主語后.如果實義動詞有賓語和狀語,　 隨實義動詞一起放在主語
之前.
　 Try hard as he will, he never seems able to do the work satisfactorily.
注意：讓步狀語從句中,有though,although時,后面的主句不能有but,但是 though 和yet可連用.
6、其他部分倒裝
1）so… that 句型中的so 位于句首時,需倒裝.
　 So frightened was he that he did not dare to move an inch.
2）在某些表示祝愿的句型中：
　 May you all be happy.
3）在虛擬語氣條件句中從句謂語動詞有were, had, should等詞,可將if 省略,把 were, had, should
移到主語之前,采取部分倒裝.
　 Were I you, I would try it again.