I thought I'd come along. But I'll pay for my own coffee.我想一起来，但我会自己付钱买咖啡的

come along一道走

Come along with us, if you like.

如果你想去就跟我们来吧。

John wants to come along with us to the movie.

约翰想和我们一道去看电影。

pay for付款

I took out an overdraft to pay for my new car.

我用透支来付新汽车的钱。

We will pay for houses by monthly instalments.

我们将按月分期付款买房。

Don't worry about that, I owe you both at least a cup of coffee.别担心，我欠你俩一人一杯呢

worry about担心； 烦恼

I don't think you need to worry about this.

我认为你不必为这事担心。

Don't worry about little things.

别为琐事烦恼。

at least至少

She may be slow but at least she's reliable.

她迟钝是迟钝，但无论如何她很可靠。

He has been there at least twice.

他至少去过那儿两次。

I had a couple of days off, went fishing.我请了几天假，钓鱼去了

a couple of两个, 几个

I saw a couple of men get out.

我看见有几个人出去了。

He patched up a couple of old tires.

他补了几条旧车胎。