TOEFL 寫作常見之倒裝句型概有五種。 

1. 否定意義或否定形式用詞或片語位於句首時之倒裝 

　 否定詞或片語：not ; never ; hardly ; scarcely ; rarely ; little;  seldom ; by no means ;
                              on no account ; neither ; nor … 

2. 當“only + 狀語 – only by….. ; only when …” 位於句首時表強調之倒裝。 

Ex. Only recently have investigators considered using these plants to clean up soil and waste sites… 

3. 假設句型/虛擬條件句(If….) 含有were, had, 或should, 省略連詞if, 形成倒裝句。 

　 Ex1.  In contrast, should another ice age occur, sea level would drop drastically. 

　 第一步，把if還原; 第二部，理解句子。因此if還原之後該句變成：“In contrast, if another ice age should occur,
                   sea level would drop drastically.” 由if 引導之從屬子句 “should occur” 的使用可知，此句是對將來的假設。 

    Ex 2. Their significance may have remained clear had the Chinese not come under foreign influence. 

該句是把條件從句放在了句子後面，if還原之後變成：“Their significance may have remained clear if the Chinese had not come under foreign influence.” 由“had not come” 的使用可知該句是對過去的假設。 

4. 加強語氣“ so/such…that” 結構中的so或such置放於句首時之倒裝。 

　 Ex. “So admired were these pieces that they encouraged the development of earthenware made in imitation of porcelain and instigated research into the method of their manufacture.　 

5. 主語較長, 為使句子平衡或強調, 倒裝表語或狀語。 

　此類倒裝句一般狀況為介詞短語、形容詞(短語)和分詞(短語)置於句首。 

By the expanse of the dessert was a soldier who was wounded.

(浩瀚的沙漠旁是一個受傷的士兵.) 

 Situated in the hub of the metropolis are a myriad of skyscrapers. 

(座落在大都會中心的是無數多的摩天大樓.)