1. 自卑: feel self-abased和feel inferior都可以, 不用加oneself
2. 其实在这里有一个词来替代自卑很贴切: 即self-conscious, 它的直译是自我在意，但引申在这个句子里比以上的两个选择更恰当。
她因为身高矮，而感到自卑: She feels/is self-conscious [because of her short stature/about being short].
3. 他因为贫穷 ，而感到自卑: He feels/is self-conscious [because of his poverty/about being poor].
4. 他非常自信 / 非常有信心: He is very confident/he is full of self-esteem.
5. A 是 B 的 20 倍: A is 20 times (the amount of) B.
