一些的新词

In Chinese, you can not add 的 between measure words and n.

e.g. You can say 许多好人，instead of 许多的好人

最近我有一节课。 在那个课中，我就认识了一些的新词：

In Chinese, measures words are very difficult for beginner. One thing you can do is to remember it

v + 了= v-ed

正在 + v= v-ing

避免
积累 ／ 积攒
犯（错误）
知识
不断

我觉得这些的词是很有用的。我不想忘记这些的新词，所以我试一试就用这些的词造一个句子就用这些的词

In English, A sentence like that I try to make a sentence, using these words. is correct

but in Chinese, you'd better make this sentence like: I try to use these words to make a sentence, and I use these words try to make a sentence is wrong either.

如果我想提高我的中文知识水平，那我必须避免不怕犯错误，而同时不断积累新词，

1.知识 means knowledge，you can not improve（提高）the knowledge

   but you can make your level（水平）higher

2.You see, if you want to learn a language, you shouldn't be afriad of (害怕)making miatakes.

   Instead of avoiding (避免) making mistakes

3.而 means However or thus, 同时 means at the same time

可以说吗？

your chinese is pretty good, you can make  sentences that we can understand.

but you should remember some measure words 

That's all, BTW, Can we be the language partner？