谓语动词单复数的使用规则一般every, each后用单数;all 后面的名词是复数.1)名词性从句及不定式、动名词作主语时，谓语动词一般用单数形式。 【例如】 To finish the work in advance is what he wants. Smoking cigarettes is dangerous to your health What seems easy in theory is difficult in practice. What caused the accident is a complete mystery. 但是，what引导名词从句作主语时，其表语是复数形式时，系动词也可以是复数形式。 【例如】 What we badly need here are qualified teachers. 2)当主语是单数，后面跟着由including, with, together with, along with, like, in addition to, as well as, rather than, but, exc
