专业三级语法: GRAMMAR 1.Bees (live )in group in a hive , and every bee (does) certain work that helps the other members of the group. 蜜蜂群居在巢里,而且每只蜜蜂做一定量的工作帮助其他蜂群里的成员。
3.The Safe Drinking ACT requires that municipal tap water (be screened )for more than 80 contaminants. 主句中若有require ,demand, suggest,insist, order prefer , propose, recommend, request 等动词,其后的that 分局中应使用be -型虚拟式,即动词原形或 should +动词原形