adj. 形容词肯定的，有把握的；一定的，无疑的；可靠的；沉着自信的
adv. 副词（表示同意）当然；（加强语气）确实；（回答他人的感谢）不客气
Are you sure about the meeting time?
你确定会议时间吗？
I'm not sure if they will come.
我不确定他们是否会来。
Make sure to lock the door.
请确保锁好门。
She is sure of her decision.
她对自己的决定很确定。
Are you sure this is the right way?
你确定这是正确的路吗？
He wasn’t sure about the answer.
他对答案不确定。
I'm sure you'll do great!
我确定你会做得很棒！
Is she sure of the facts?
她对这些事实确定吗？
Be sure to check your work.
请确保检查你的工作。
We need to be sure before proceeding.
我们在继续之前需要确定。
make sure
核实, 确保
for sure
绝对, 毫无疑问
to be sure
(承认属实)诚然, 固然, 无可否认
sure enough
(表示不出所料)果真, 果然
be sure to do
务必, 确保
比较级: surer;
最高级: surest;
