1.be unable to 不会;不能做某事
Many families on low incomes will be unable to afford to buy their own home.
许多低收入家庭将会买不起自己的房子
2.find out 认为……理所当然;视为当然
I need to find out who tried to frame me.
我得找出是谁企图诬陷我
3.instead of 替代;取代
We did the logo in lower-case letters instead of capitals.
我们的徽标用了小写字母,没用大写
4.less than 不到;小于
The marriage had lasted for less than two years.
这段婚姻维持了不到两年