1. pig out 狼吞虎咽、大吃特吃

Would you like to pig out with us tonight ?

今晚想不想跟我们一起去胡吃海喝一顿?

2. eat up 吃光、吃完、尽情吃

You can eat up the rest of the food.

你可以把剩余的食物吃光。

3. eat out 上馆子吃、出去吃饭

It's a good idea to eat out once a while.

隔段时间在外面吃一顿真不错。

4. eat in 在家吃饭

Are you going to eat in or eat out?

你今天打算在家吃饭还是在饭馆吃饭?

5. eat like a bird 吃得很少

Girls always eat like a bird in order to keep a slender figure.

女孩子们吃的很少，为的是保持苗条的身材。

6. grab a bite 随便吃几口垫垫肚子

Let's grab a bite before we go.

走之前咱们先赶紧垫垫肚子吧!