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。