逻辑主语 非谓语动词
Jenny hopes that Mr.Smith will suggest a good way to have her written English improved in a short period.
这句话的逻辑主语是什么?为什么要用improved?
His being late again made the teacher very angry.
Arriving at a strange-looking house,he showed me into a large ,bright,clean room.
Astonished at the amount of work in the new timetable,Lucy decided to leave her job immediately.
以上三句话能帮我解析一下吗,到底什么时候用现在分词,什么时候用过去分词呢?