Language students often think they have memory(记忆) problems. They worry because they can't remember words. In fact, the problem usually isn't with their memory. The problem is with how they study. In my opinion, using a right way is the most important.
To remember words better, you need to understand how memory works. There are two kinds of memory: short-term and long-term. When you see, hear or read something, it goes first into short-term memory. But short-term memory lasts for only a few seconds, that means we will forget things soon in short-term memory. You will only remember something longer if it goes in to long-term memory. Your long-term memory is like a very big library with many, many books. And like a library, it's organized. When you put away(放好，储存) a book or memory, you can't just leave it anywhere. You have to choose a place where you can finditagain.
How can you do this with vocabulary? The answer is to work with the word and think about the word in new ways. You can do this by writing new sentences with the word in it. Even better, you can invent a little story about the word, with people or places that you know. Another way is to make a picture in your mind with the word. For example, if the word is "height", you can think of the tallest person you know and try to guess his or her height. All of these activities are good ways to think about words. They make the meaning of words stronger in your long-term memory. And they give a way to find a word when you need it.
This is my idea about how to improve ways to remember words, and I hope it can help you.
