under
［误］ The lake is two meter s under sea level.
［正］ The lake is two meters below sea level.
［析］ under的意思是在某物的下面，而below＝lower than, 即"低于"。
［误］ Under the help of our teacher, all of us passed the exam.
［正］ W ith the help of our teacher, all of us passed the exam.
understand
［误］ I think it is diffcult to make myself to understand.
［正］ I think it is diffcult to make myself understood.
［析］ 这句话的意思是"我想让别人理解我太难了"。
［误］ I am understanding the lesson now.
［正］ I understand the lesson now.
［析］ understand一词没有进行时态。类似的词还有belong, find, hear, love, like等。
