Question

Not until the early years of the 19^th century ________ what heat was

1. A.
   man did know
2. B.
   did man knew
3. C.
   didn't man know
4. D.
   did man know

Answer 1

D
試題分析：考察部分倒裝。本題考察的是否定詞放在句首構(gòu)成的部分倒裝。
1) 以否定詞開頭的句子要求部分倒裝。注意下列句子中助動詞或情態(tài)動詞提前、甚至補(bǔ)充助動詞的用法：
例：Not until yesterday did little John change his mind.（小約翰直到昨天才改變了主意。）
In no country other than Britain, it had been said, can one experience four seasons in the course of a single day.（據(jù)說除了英國世界上沒有哪個國家能讓人在一天中感受到四季變化）
2) 以否定副詞開頭并加狀語放在句首的句子要求部分倒裝。這些否定副詞有barely, hardly, little, seldom, scarcely…… when, never, no sooner…… than, rarely, no more, not nearly, not only等以及only。
Only in the country can you learn the “true English”.
3）一些如scarcely……when, no sooner ……than, hardly……when引導(dǎo)的主從復(fù)合句主句要求使用過去完成式。
本題中把not until the early years of the 19th centur放在了句首，故D正確。
考點：考察部分倒裝