1 如果修饰主语就不能倒装------Only John was there-----因为only已经修饰主语了
2 She met only John there------Only John did she meet there------only修饰John放在句首就要倒装.--------否定副词或否定短语置句首时用倒装我指的是在从句中，如：The seller promise that at no time will they sell fake commodities.???用倒装吗你好。用的，并且你不是用了吗？