if you want to ,是if you want to have a look around it.的縮寫(xiě).
省略了to的話,意思表達(dá)不清了.也可以說(shuō)成 Go ahead if you like.
祝進(jìn)步.為啥意思會(huì)表達(dá)不清??？if you want to動(dòng)詞+賓語(yǔ)。如果是 if you want, 要接to動(dòng)詞+賓語(yǔ)一般是to跟前面的。want to 是想干什么。