英文句子 sentence

Some person was erratic.
某些人是極其難以捉摸的。 某些人是古古怪怪 的。 I cannot make head of it.使我莫名其妙。使我摸不著頭緒。使我心緒很亂。 I cannot make head of it that some person was erratic.
某些人是古古怪怪的,使我莫名其妙。

2010-12-24 22:28:04 補充：
Idiom: make head or tail of something (make head nor tail of something)

Note: with negatives and in questions
To make any sense of it; to understand it.
Example: I can't make head or tail of this rota

I think 李∮玲 had explained it well very, and no, it's not wrong in saying " he cannot make head of something.

If I were you, I would write in the following way: 'I cannot make ahead of someone who were erratic.'

Sorry我唔明呢句想講咩= =