一．含否定意义的词never, not ,hardly ,little, seldom ,scarcely或no sooner +状语;
二．在so…that、such…that的结构中，so、such放在句首时，后带表语或状语，主句倒装三．以here ,there ,out , in ,up down ,away 等副词开头而主语是名词。

四．only +状语(当only后接副词、介词短语或状语从句放在句首时)
五．介短语位于句首，谓语动词是表示位置或位置移动的词。

例如：come ,go ,sit ,stand ,lie ,climb , ect.
e.g. In front of the school lies a lake .
六．so , neither , nor 在句首，表示前面的情况也适用另外的人或物
七. 以as ,no matter how , however 等连词引导让步状语从句
e.g. Young as he is ,he is quite experienced in the work .
However hard a solid may be，we can change its shape.
八. 在虚拟条件句中，从句中有had、should、were(was)，省略if
Were it to rain tomorrow, we would go out .= If it were to rain tomorrow, we would not go out .
If I had attended the meeting, I would have been here.= Had I attended the meeting, I would have been here.。