1.A nut

傻子,疯子

He is a nut. = He is a little crazy.

他有点疯疯癫癫的.

例子: My teacher is a nut. Everyday he wears socks that don't match and he always comes in the door backwards.

我的老师有点傻气.他每天穿的抹子都不成双,而且总是倒退的进门.

2.A pain in the neck

脖子痛(苦事)

That was a pain in the neck. = That was bothersome and difficult.

这件工作又烦人又困难.

例子: Learning another language is a pain in the neck but ultimately is rewarding.

学外语又烦人又困难,不过以后会苦尽甘来.

3.A piece of cake

一块蛋糕(小菜一碟)

That was a piece of cake. = That was really easy.

这件事很容易.

例子: After hiking twelve kilometers on Friday and eleven on Thursday, hiking four kilometers back to the train station was a piece of cake.

星期五走了十二公里,星期四走了十一公里. 这以后再走四公里回火车站是小菜一碟.