[例1]Not until the early years of the 19th century______what heat is.
A.man did know B.man knew
C.didn’t man know D.did man know
【解析】答案D。否定词Not在句首，要求用部分倒装的句子结构。
[例2]Be quick！______.
A.The bus comes here B.The bus here comes
C.Here the bus comes D.Here comes the bus
【解析】答案D。用一般现在时表示正在发生的动作出现在倒装句中，所以此题答案为D。
[例3]On the wall______two large portraits.
A.hangs B.hang C.hanged D.hanging
【解析】答案B。由于介词短语On the wall位于句首，全句要采用完全倒装式，因为主语是复数，所以正确答案为B。
[例4]Do you know Tom bought a new car？
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
【解析】答案B。句中的nor引出部分倒装结构，表示“也不”。由 so，neither，nor引导的倒装句，表示前一情况的重复出现。其中，so用于肯定句，而 neither，nor 用在否定句中。
[例5]Little______about his own safety，though he was in great danger himself.
A.does he care B.did he care C.he care D.he cared
【解析】答案B。否定意义的Little在句首，该句要倒装，故答案在A、B之中选择一个，A的时态不对，故答案为B。
[例6]Only in this way______progress in your English.
A.you make B.can you make
C.you be able to make D.will you able to come
【解析】答案B。Only 修饰in this way置于句首，句子要部分倒装，故答案为B。
[例7]Not until all the fish died in the river______how serious the pollution was.
A.did the villagers realize B.the villagers realized
C.the villagers did realize D.didn’t the villagers realize
【解析】答案A。由于Not until在句首，主句要采用部分倒装，这样先可排除B、C，又由于D不应该用didn’t，故A为正确答案。