mouse与rat的区别：中文含义不同、词性不同、用法不同。mouse只作名词，基本含义为“老鼠”、“耗子”、“鼠标”；rat可作名词和动词，基本含义为“老鼠”、“讨厌的人”、“骗子”、“捕鼠”、“告密”。
一、mouse的基本意思及用法介绍
mouse作为可数名词，译为老鼠;耗子;鼠标。
例句：The stores were overrun with rats and mice.
仓库里到处都是大大小小的老鼠。
Click the left mouse button twice to highlight the program.
双击鼠标左键来加亮突出这个程序。
He was a weak little mouse of a man.
他是个懦弱无能的人。
A cat often plays with a mouse before the kill.
猫在咬死老鼠之前常常要耍弄它一番。
The house was completely overrun with mice.
这房子简直成了老鼠的天下。
They called her Miss Mouse because she was so meek and mild.
他们称她为“鼠小姐”，因为她总是那么懦弱谦和。
Use your mouse to drag the pictures to their new size.
用鼠标拖动图片，将其调整为新的尺寸。
二、rat的基本含义及用法介绍
1、作为名词，意为老鼠;耗子;讨厌的人;卑鄙的小人;骗子。
例句：This was demonstrated in a laboratory experiment with rats.
在实验室用老鼠进行的实验证明了这一点。
What did you do with the gun you took from that little rat Turner?
你是怎么处理从那个叫特纳的小叛徒手里得到的枪的？
2、作为动词，意为捕鼠;背叛，告密。
例句：They were accused of encouraging children to rat on their parents.
他们被指控唆使儿童告发自己的父母。
She claims he ratted on their porce settlement.
她声称他违反了他们的离婚协议。
