2） Not until the early years of the 19th century ___ what heat is.
A. man did know B. man know C. didn’t man know D. did man know
答案D. 看到Not until…的句型，我們知道為一倒裝句，答案在C，D 中選一個。改寫為正常語序為，Man did not know what heat is until the early years of the 19th. 現(xiàn)在將not提前，后面就不能再用否定了,否則意思就變了。
三、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Not only… but also連接兩個分句時，才在第一個分句用倒裝結構。如果置于句首的Not only… but also僅連接兩個并列詞語，不可用倒裝結構。
Not only you but also I am fond of music.
四、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 quarrelled with his brother?
---I don’t know, _____.
A. nor don’t I careB. nor do I careC. I don’t care neitherD. I don’t care also
答案：B. nor為增補意思"也不關心"，因此句子應倒裝。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so引出的句子用以對上文內容加以證實或肯定時，不可用倒裝結構。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.
A. man did know B. man know C. didn’t man know D. did man know
答案D. 看到Not until…的句型，我們知道為一倒裝句，答案在C，D 中選一個。改寫為正常語序為，Man did not know what heat is until the early years of the 19th. 現(xiàn)在將not提前，后面就不能再用否定了,否則意思就變了。
三、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Not only… but also連接兩個分句時，才在第一個分句用倒裝結構。如果置于句首的Not only… but also僅連接兩個并列詞語，不可用倒裝結構。
Not only you but also I am fond of music.
四、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 quarrelled with his brother?
---I don’t know, _____.
A. nor don’t I careB. nor do I careC. I don’t care neitherD. I don’t care also
答案：B. nor為增補意思"也不關心"，因此句子應倒裝。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so引出的句子用以對上文內容加以證實或肯定時，不可用倒裝結構。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.