25th

At the post office1.Vocabularyregister/weigh/seal/stamp/break/carry/stingy2.Grammer2.1 Let sb. v让某人~Let me weigh it2.

At the post office

1.Vocabulary

register/weigh/seal/stamp/break/carry/stingy

2.Grammer

2.1 Let sb. v让某人~

Let me weigh it

2.2 That'll be +金钱+ 是/要…（钱）

How much is it?

That'll be twenty dollars.

2.3 by air mail /sea mail/regular mail/register mail/spcial delivery/express delivery

2.4 though的用法

2.4.1 用在句尾表示然而，不过

You can't seal the envelope.

Can I borrow your bike?

Yes,you can.Don't break it,though.

2.4.2用在句首表示虽然，但是不能与but连用，类似于because,so的情况

Though he is nice,I don't like him.

=He is nice,but I don't like him.