25th
发布时间：
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.
