Do Things Without Forethought触机即发
do sth without effort不费力地干某事
do go without没有…也行
do o without没有…也行
do something without hesitation毫不犹豫做某事
Why do students without sleep为什么同学也没有睡觉
Please do it without delay请马上行动
cannot do it without authorization未便擅自处理
PHRASAL VERB（动词词组） If you do without something you need, want, or usually have, you are able to survive, continue, or succeed although you do not have it. 没有…也行
We can't do without the help of your organization.
我们不能没有你们机构的帮助。
PHRASAL VERB（动词词组） If you say that you could do without something, you mean that you would prefer not to have it or it is of no benefit to you. 宁愿不要; 没有好处 [非正式]
He could do without her rhetorical questions at five o'clock in the morning.
他不愿她早晨5点就问他那些无须回答的问题。