如：Here comes a bus . Here it comes(主语是代词的不倒装).
Here，there，then，up，down，away，off，in the room，on the wall 等置于句首。
总结公式There （on the wall，in the south of …）+谓语+主语
Never , nor ,not ,hardly（几乎不）,little ,seldom ,scarcely（几乎不）,rarely(少有地)，at no time(任何时候决不)in/under no circumstances ,in no case(任何情况下决不)by no means(任何方式决不)on no condition(任何条件决不)等放句首时。
以及句式：No sooner had sb done sth than sb did sth.（一……就……）
Hardly/scarcely had sb done when sb did sth. （一……就……）
如—You are a student
—So am I.
—You aren’t a teacher.
—Neither/Nor is he.
3. so/such… that…表示如此… 以至于…
如：He is such a good student that all his classmates admire him
——Such a good student is he that all his classmates admire him
The weather is so fine that all of us want to go outing
——So fine is the weather that all of us want to go outing
如If I were you(were I you),I should study hand
If he had studied hard (Had he studied hard), he could have made great progress last term
If it should rain (should it rain), I would stay at home
Only after the war did he learn the sad news
Only when he returned did we find out the truth
Only he can answer the question