1. 主系表 I am happy. 2. 主谓 He often swims in the river.(often是频度状语，in the river 是地点状语；这类谓语是不及物动词)3. 主谓宾 I finished my homework. I was doing my homework when my mother was watching TV. (when引导的是时间状语从句；这里 was doing 是表过去进行时的谓语)4. 主谓双宾 He brings me a prensent. (me是间接宾语，a present 是直接宾语)He brings me a present which is very exp...
