【正文】
,and not I______playing football. ? 兩個主語,一個是肯定的,一個是否定的,謂語動詞與肯定的主語保持?jǐn)?shù)和人稱一致。 likes number of people who travel by air ______larger than before. A number of other plants______founded in America. ? the number of +復(fù)數(shù)名詞作主語時,用單數(shù); a number of +復(fù)數(shù)名詞作主語時,用復(fù)數(shù)。 is were plus three_________ six. One times two _______________ two. ? 在加減乘除的算式中,謂語動詞用單數(shù)復(fù)數(shù)均可 ,但常用單數(shù)。 is /are equal / equals