1.Did you enjoy yourself in London?你在伦敦玩得开心吗?
enjoy oneself 玩的开心、玩得高兴= have fun;= have a good time
We had a good time at Disneyland.我们在迪士尼乐园玩得开心极了。enjoy (doing) sth.喜欢(做)某事

2. What are English schools like?英国的学校怎么样?
What is ...like?(询问情况）...怎么样?主要用法如下:
1要求对方对特定事物进行描述。如:
——What was the exam like?这次考试怎么样?—It was very difficult.难极了。
询问天气情况。如:
— What was the weather like?天气怎么样?③用于人时,既可指人的外表,也可指人的性格、品质。如:
—What is she like?她长得如何?

3.Let's have a look.让我们看一看。
have a look“看一看”，不能接表示“看什么”的宾语;若表示“看什么”用have alook at或look at。
Come and have a look.快来看一看吧。
May I have a look at your new skirt?我瞧一眼你的新裙子好吗?