先take是正式,have多隨意.所以take a look at 有檢查之意,較為嚴肅,have a look at就是去看看,比較口語和生活化.take a look in 后可以接地點,比如Because I bought the ticket which I could take a look in the palace.但是at后面接具體的事情或者抽象的東西,比如Have a look at what happens.