and 连接两个不定式 谓语动词用单数还是复数?如：To play basketball and to go swimming useful for character-training.A.is B.are 可是正确答案给的是A阿，到底哪个正确阿。
2019-05-03
and 连接两个不定式 谓语动词用单数还是复数?
如：To play basketball and to go swimming _____ useful for character-training.
A.is B.are
可是正确答案给的是A阿，到底哪个正确阿。
优质解答
B
用and连接的成分表单一概念时谓语动词用单数；就近原则；主语中含有某些连词(如as well as,besides,in addition to等)时,谓语动词的数同第一个主语保持一致.
B
用and连接的成分表单一概念时谓语动词用单数；就近原则；主语中含有某些连词(如as well as,besides,in addition to等)时,谓语动词的数同第一个主语保持一致.