重点讲解：
1. each other 彼此；互相；
例句：We should always help each other.
我们应始终互相帮助UA2VTbdWA1。
2. think of 想到；想起；想出；
例句：I shudder to think of the problem ahead of us.
我想到摆在面前的问题就不寒而栗!uDnn#gz)ZQ~[T。
3. tend to do sth. 往往会；经常就；
例句：People tend to gain weight on holidays.
人们常常在假期长胖Qtq]x1syV2K)Y2)a@kN。
4. look for 找；寻；
例句：He began to look for another position immediately.
他马上开始寻找另一个职位Hxm;n3N4+n。