2．易混淆词语辨析：
1) carry on(vi.)继续；carry out(vt.)实行；实现；执行。
例如：They carried out the plan and carried on with the work.
2) lie (lay, lain) down 躺下；lay (laid, laid) down 放下
3) in charge of 负责…，in the charge of 由…负责。
例如：I’m in charge of the class.＝The class is in the charge of me.
4) be angry with/at sb. 生某人气；be angry at/about/over sth.因某事生气；
例如：Mother got angry with/at me only because I had broken a precious cup.
5) call on sb. 拜访某人；call at sp. 访问某处
drop in on sb. 顺便拜访某人；drop in at sp. 顺便拜访某处
6) knock on/at sth. 敲某物；knock into sb./sth. 撞上某人/某物。
