1. 全倒裝句：把整個(gè)謂語動(dòng)詞完全移到主語之前
例：Here comes the postman. 這里的謂語comes完全移到了主語the postman前面,所以是全倒裝.



2. 半倒裝句,即：部分倒裝句：只把謂語的一部分（如助動(dòng)詞、情態(tài)動(dòng)詞等）移到主語之前,或把句子的強(qiáng)調(diào)部分提前.
例：Only once was John late to class. 這里只是將助動(dòng)詞(be動(dòng)詞)was移到主語John前面,而實(shí)意動(dòng)詞late仍在主語后面,所以是部分倒裝,即半倒裝句.

注意：以否定詞開頭的句子要“半倒裝,如：no, not, never, seldom, little, hardly, at no time, in no way, not until等詞在句首,句子要倒裝.
例：Not until yesterday did little John change his mind.直到昨天小約翰才改變了主意.
Never have I seen such a performance.

如果否定詞不在句首,則句子不倒裝.
例：I have never seen such a performance.