I'm quite satisfied with your answer.

我对你的回答很满意。(对)

Many intellectuals with revolutionary tendencies went to the liberated areas.

许多带有革命倾向的知识分子都投奔解放区了。(有)

These apartment houses are for workers with families.

这些住宅楼是给有家属的工人盖的。

He was sitting in a chair with his hands folded.

他两手交叉在胸前坐在椅子上。(状语)独立结构

They are highly mechanized farms，with machinery to do all the work.

它们是高度机械化的农场，所有工作都由机器进行。(状语)独立结构

I will be with you again in half an hour.

过半个钟头我还会跟你们在一起的。

(with 的介词短语作表语。另注意in 将来时态in 以后)

Our sympathies were with the students persecuted by the gang of four during the cultural revolution.

我们是非常同情“文革”中被“四人帮”迫害的青年学生的。(with 的介词短语作表语)。

海、陆、空、车、偶、被by，单数人类known to man

例： by land (air， sea， water， bus)

陆路(航空，水陆，水路，乘公共汽车)