1. 15兩個或兩個以上主語的合并

兩個簡單句的主語可由連詞and (和)，but (但是)，both…and (兩者都)，either... or (或者…或者…)，neither…nor (既不…也不…) 及not only…but also (不僅…而且) 等連接組成一個簡單句，但要注意主語和謂語動詞的一致性：

The boss is flying to Parts. His secretary is flying to Paris. 老板正飛往巴黎。他的秘書正飛往巴黎。

The boss and his secretary are flying to Paris. 老板和他的秘書正飛往巴黎。

Both the boss and His secretary are flying to Paris老板和他的秘書都正飛往巴黎。

The boss is flying to Rome. His secretary is not flying to Rome. 老板正飛往羅馬。他的秘書沒有飛往羅馬。

The boss but not his secretary is flying to Rome. 是老板而不是他的秘書正飛往羅馬。

The boss may be flying to Berlln. His secretary may be flying to Berlln. 老板可能正飛往柏林。他的秘書可能正飛往柏林。 (=One of the two may be flying there. 他們倆人中只有一個可能正飛往柏林。)

Either the boss or his secretary is flying to Berlln. 要么是老板，要么是他的秘書正飛往柏林。

The boss isn’t flying to York. His secretary isn’t flying to York. 老板沒有飛往約克。他的秘書沒有飛往約克。

Neither the boss nor his secretary is flying to York. 老板和他的秘書都沒有飛往約克。