看一看的英文是have a look。have a look的例句：He thought he heard a mouse under the bed，and got down on all fours to have a look（他好像听见床底下有老鼠的声音，就趴在地上看了一下）。

have a look的例句：I insisted that we should have a look at every car（我坚持我们每辆车都应该看一下）；You should go along and have a look（你应该去瞧瞧）。