26.拐角处有一家银行

There's a bank on the corner.

27.上海大剧院在市中心

The Grand Theater is located in the city center.

28.告诉对方这是一年中最适宜来上海游玩的时间

It's the most suitable time during a year to pay a visit to Shanghai.

29.请随便

Help yourself!

30."我对这儿也不熟悉"

Sorry, I am a stranger here too.