hardly(... when), no sooner(... than), not until等开头的句子。 eg. Little did I dream that such a thing would happen. Never have they ever seen an animal like that. Rarely does such a thing happen in our district. In no circumstances will I allow you to go there. Hardly had I got home than it began to rain. Scarcely had she left when the phone rang again. Not only are the students interested in the film, but also the teacher began to love it. Not until people lose their health do they realize its value. 注：not until引导的句子里，主句的主谓倒装。 B)以only开头的句子。
eg. Only on one point do I agree with you. Only when his mother came home did the boy begin to do his homework. 注：only引导的句子里，主句的主谓倒装。 C)以so加上形容词或副词开头的句子。
eg. So busy is he that he has no time to read newspapers. So fast did he run that I could not keep up with him. D)以so, neither, nor + V. + S.的句型，表示?另一个也（不）如此?。 eg. Mary spent the whole evening watching TV, and so did Jane. It is hot today. So was yesterday. The geography books haven’t arrived. Neither have the history books. He can’t remember the new telephone number. Nor can I. 注：有时以so开头的句子不用倒装形式，这是这个句子的意思是?的确如此?，只是表示完全同意前面一句话。
eg. ―You forgot to bring the textbook with you!‖ ―Good heavens! So I did.‖ ―Bill is the cleverest in our class.‖ ―So he is. E)以一些副词或词组如often, always, many a time, well, thus等开头的句子。 eg. Often do I see the man in the supermarket. Well do I remember my first day at school. Thus was the emperor cheated. F)句型 ―Gone are the days when...‖ eg. Gone are the days when I was young.
*G)虚拟条件句中，把were, had, should放在句首，省略连词if.。 eg. Were I in your place, I would accept the job. Had I known it then, I would not have done it.
Should it b