英語易錯點典題例析

　　天津四中張國忠

　　1.當定語從句的引導詞在從句中作主語時，定語從句中謂語動詞的形式是根據先行詞而定的。

　　【誤】People who has been invited to the party are very excited.

　　【正】People who have been invited to the party are very excited.

　　【析】例句中who在定語從句中作主語，先行詞是people，從句中謂語動詞要用have been invited。

　　2.主語是單數時，盡管後面跟有with，together with，but，except，besides，as well as等介詞短語，謂語動詞仍用單數形式。

　　【誤】Mary,with her brothers,study Chinese in China.

　　【正】Mary,with her brothers,studies Chinese in China.

　　【析】Mary在句中是主語，謂語動詞要用studies，而不用study。

　　3.表示學科名稱的名詞maths、physics等為單數名詞，news為不可數名詞，他們在句中作主語時，謂語動詞都應用第三人稱單數。

　　【誤】Physics are difficult for him.

　　【正】Physics is difficult for him.

　　【析】physics在句中作主語為單數名詞，謂語動詞應用第三人稱單數is。