如果不加控制, 这种短缺会引起肉价再次上涨。
That set all of them off laughing again.
那又惹得他们哄堂大笑。
点燃, 爆炸
例句:Be careful that you don't set the fireworks off by mistake.
当心点, 别弄错了引起那些爆竹爆炸。
The children are setting fireworks off in the garden.
孩子们在花园里燃放烟火。
1.Jack Straw, who was British Foreign Secretary at the time of the Iraq invasion, has said he could have prevented Britain's participation in the war.
he could have prevented 是虚拟语气:
1)could (不能用 can) have done 表示“过去本能够做某事却未做。”注意:其否定形式 couldn't have done 没有虚拟语气的用法,couldn't have done 只能表推测,相当于 can't have done,意为:“过去不可能做了某事。”
2)should have done 表示“过去本应该做某事却未做。”其否定结构 shouldn't have done 表示 “过去本不该做某事却做了。”
3)ought to have done 表示“过去本应该做某事却未做。”其否定结构 oughtn't to have done 表示 “过去本不该做某事却做了。”
4)need have done 表示“过去本有必要做某事却未做。”其否定结构 needn't have done 表示 “过去本没必要做某事却做了。”