Let me give you a hand.

让我来帮您一下吧！

I've come to say goodbye.

我是来告别的。

See you later.

回头见 注：常用在平时暂别下次见面没有约定的时间。

Quite so.

的确是这样。

I wish it would stay this way for the weekend.

但愿整个周末都能保持这样的好天气。

Keep going straight for two blocks, then turn right on Elm street and you'll run right into it.

一直走，过两个街区，然后往右拐是埃尔姆街，再往前走，迎面就是莫特街。