1.在你离开之前，有些事应该要告诉你。(ought to;there be)
学生错例：
1)Before you leave, there are somethings I ought to tell you.(受中文“些”字意思影 响，误把单数的something 当somethings)
2)Before you leave,there are some things ought to tell you.
(误用something;句子成分残缺，从句漏了主语 I)
3)There are something that ought to tell you before you leave.
4)There is something ought to tell you before you leaving.(受中文“在”影响，误用了“leaving”)
2.我很难把学习和兴趣结合起来。(combine...with...)
学生错例：
1)I'm difficult to combine study with interest.(典型的中文翻译思维，与地道的英语表达有较大差别)
2) I hardly combining study with interest.(中式英语)
3)It's hardly that combine study with interest.(乱套句型)
4)I hardly combine study with interest.(照字翻译)
名词的单复数形式的误判