I cannot make myself understood in English.
我无法用英文使自己被人了解。(我无法用英文把我的意思讲清楚。)
You will enjoy stories all the more for having understood the characters in them.
你会因为已经了解小说中的角色,而更加喜欢小说。
I had a lot of trouble making myself understood among the foreigners.
想让外国人听懂我的意思非常困难。