Question

第五题为什么选a

Answer 1

半句叫独立主格结构
我讲定义讲用
汉语两主语+谓语结构用逗号隔英语行间总用连词and, or, but, so, when, why, so that, because, until, if, while等等

用连词行其主谓结构必须改非主谓结构谓语词改非谓语词要改-ing形式要改-ed词形式

所述句要选择being
错误选择was知道规则

半部主语词间关系用词：
He is standing there angrily, a knife tightly held in his right hand. (knifeheld关系

种结构其名词前通加with, ：
He is walking down the road, with many cars running by.
He is walking down the road, with a heavy bag carried on his back.