They are walking over the bridge. 主语They 谓语 are walking 那么ov
They are walking over the bridge. 主语They 谓语 are walking 那么over the bridge 做什么成分?(①)
同样 The pictures are on the wall 中 on the wall 在墙上,是介词短语作表语,
那么 There is a table in the room 中 in the room 也是介词短语做表语吗?(②)
我的语法比较薄弱,希望帮我讲解的详细点,谢谢.