The book can_________for a week.A.keep B.kept C.is keep D.be kept

问题描述:

The book can_________for a week.A.keep B.kept C.is keep D.be kept
More than two schools_______in the city next year.A.are built B.were built C.have built D.will be built
when_____the car_____?----- In 1885
A.did;invent B.was;invented C.does;invent D.is;invented

标题选D be+过去分词表被动 ,can后面加动词原形 所以是 be kept 那本书可以保留一周第二题选D 同样是被动语态 (学校是被建造出来的),但题中有next year,所以用将来时will be ,明天这座城市将有超过2个学校被修建第...为什么第一道题不是直接用B应为can是情态动词(情态动词是一种本身有一定的词义,但要与动词原形及其被动语态一起使用,给谓语动词增添情态色彩,表示说话人对有关行为或事物的态度和看法,认为其可能、应该或必要等。情态动词后面加动词原形。)所以can的用法是can+动词原形,而被动语态是be(be动词包括am、is、are,而am、is、are的原形是be)+过去分词,所以两者结合在一起就是can be kept