I can't express myself in English.
我不能用英语表达思想。
She can express her idea in English, and efficiently.
她能用英语表达思想，而且很清楚。
He sets out his idea in simple English.
他用简单的英语表达他的思想。
Thoughts are expressed By means of words.
思想是用言语表达的。
We clothe our thoughts in words.
我们用语言表达思想。
We express our thoughts by speech.
我们用言语表达思想。
James can express himself in good clear English.
詹姆斯能用正确而清晰的英语表达自己的思想。
You can express yourself in English (quite) freely now.
你现在可以相当流利地用英语表达自己的思想了。
I find It difficult for me to express myself In english .
我发现我难以用英语表达我的意思。
He is still unable to express himself in English.
他仍然不能用英语表达自己的意思.
can't express the idea adequately in words;
不能用言语充分地表达思想;
express an idea, etc. in words.
用语言表达一个思想等等。
He expressed his thoughts in clear and fitting language.
他用明白恰当的语言来表达他的思想。
use of more words than required to express an idea.
用了比表达思想所需要的更多的语言。
make(thoughts,feelings,etc)clear to sb (by using words,or else by gestures,behaviour,etc)
（用言语、手势、行为等）表达（思想、情感等）
It is absolutely not easy to learn a foreign language. However, I have been studying English for several years, but I still can't express my thinking effectively.
学好一门外语决非易事。尽管我已学了几年英语，我仍然不能有效地用这种语言表达思想。
Language is the vehicle of thought.
语言是表达思想的工具。
Influence of Chinese and English Thinking Patterns on Oral English
汉、英思维模式对英语口语表达的影响