为了强调或平衡句子结构，英语中经常采用倒装句。倒装分为全部倒装和部分倒装。全部倒装指句子的谓语动词全部位于主语之前。部分倒装是指谓语动词的一部分如助动词或者情态动词置于主语之前。如果没有助动词或情态动词，需要根据时态添加do,does,did等，并将其置于主语之前。
1. Not until I began to work ____ how much time I had wasted.
A. didn't I realize B. did I realize C. I didn't realize D. I realized
2. Only by practicing a few hours every day ____ be able to master the language.
A. you can B. can you C. you will D. will you
3. If you don't go, neither ____.
A. will I B. do I C. I do D. I will
4. No sooner ____ to the station ____ the train left.
A. had I got， when B. I had got， than C. had I got， than D. did I get， when
5. Never in my life ____ such a thing.
A. I have heard or have seen B. have I heard or seen
C. I have heard or seen D. did I hear or see
6. —Here ____! Where is Xiao Liu？
—There ____.
A. comes the bus， is he B. comes the bus， he is
C. the bus comes， is he D. the bus comes， he is
