be able to

• We must be able to stay impartial at all times .
  我们必须经常保持公正的态度。
• I have never been able to work her out .
  我一向无法了解她。
• The major had been able to survive .
  这样少校终于顶下来了。
• I am very sorry i won't be able to go .
  很遗憾，我不能去。
• They were able to carry the flag to victory .
  他们能把这面旗帜支撑到最后胜利。
• Had they but been able to see into the future .
  要是他们能看到未来的情况就好了。
• You will be able to advise us .
  你一定能给我们出个主意。
• Sorry , i won't be able to keep you company .
  恕不奉陪。
• The car would be unlikely to be able to make the turn .
  汽车未必能作这样的转弯。
• They were able to nitrate methane to nitromethane .
  他们能将甲烷硝化成硝基甲烷。