英语到底是什么(819:43:38)
数量在1到2之间的物,表示单数还是复数谓语用isdoes还是aredo
Morethanoneperson——beeninfectedwiththiskindofdisease.
A have B has
Oneandopointfive——onepointfive.一加零点五等于一点五.
Amake Bmakes