1、look at... 看某物；看向某物eg:He looks at the aeroplane in the sky. 他看向在天空中的飞机。
2、have a look (at...) 看一看(某物)eg:Let's have a look at this shop. 让我们看一看这个商店吧。
3、look after ... =take care of ... 照看；照顾eg:She looked after this baby yesterday 她昨天照顾了这个婴儿。
4、look for ... 寻找...eg: She is looking for her mirror. 她正在寻找她的镜子。