不确信做某事用英语怎么写

Not sure to do sth

确信───Sure;不───no

The doctor is sure to pull her through.───医生一定能使她康复.

Be sure to give your family my regards.───一定要代我向你的家人问好.

Be sure to do the sowing in good time.───确保适时播种.

He is experienced and works with a sure hand.───他办事很老练.

Are you sure you want him as your partner for life?───你决定要他做你的终生伴侣吗 ?

Be sure to bar all the doors before you leave.───在离开前,务必把所有的门都闩上.

I would like to do it with you, but I am not sure whether my parents permit.───我愿意和你一起做, 但不知我父母是否允许.

I only came to make sure that everything was all right.───我只是来弄清楚是否一切都无问题.

I'm sure my neighbours spy on me.

Are you sure you can do it?

I'm sure he needs no introduction.

Death is common [sure] to all.

He who fears being conquered is sure of defeat.Napoleon Bonaparte