look down;look at;look down at;look down on区别?

问题描述:

look down;look at;look down at;look down on区别?

look down:向下看,不带宾语,如:Don't look down while you are on the edge of the cliff.在悬崖边上别往下看.
look at sb./sth.:看着(某人/某物),如:Look at my eyes and say it again.看着我的眼睛再说一遍.
look down at sb./sth.:低头看(某人/某物),如:She looked down at her toe and murmured something.她低头看着自己的脚趾,小声嘟哝着.
look down on/upon:看不起,小看(某人),如:You shouldn't look down on someone else because he is poor.不要因为别人穷而看不起他.