Yeah, I agree with Suki. It's okay if you can't seem to remember a lot of 单词. I think the best way to learn vocabulary is to read books :) You will build up your vocabulary for sure!

我现在也是在学习英语。个人认为，记单词千万不可死记硬背，要多看多听多读。而且要对英语本身有兴趣才行！像我吧！常常看外国电影或电视剧（要带字幕的哦！），也常常听和唱外国歌曲，我觉得这样对我学习英语有很大的帮助！你也试试看吧！希望我的建议能帮到你！