翻译：你拥有的词汇量越大，你就会觉得英语写作越容易。(the more ... the more)

The more vocabulary you hold, the easier you will find writing English composition.

觉得... 用find doing

拥有的词汇量，我推荐用hold一词

the more bigger vocabulary you had, the more easier of writing to you.

the more vocabulary you possess, the easier English writing will be.