如题所述
第1个回答 2022-10-03
be certain to do 和be sure to do的区别
一、祈使句中用法不同
1、Be sure (not) to do sth.意思是一定要或不要做某事，祈使句通常采用be sure to do。 如：
Be sure not to forget it.
千万别忘记啦。
Be sure to get there before nine.
务必在九点前到达。
2、祈使句中通常不用 certain。
二、在句中用了或形式宾语 it 时用法不同
1、在句中用了形式主语或形式宾语 it 时，通常只用certain。如：
It's certain that he'll come tomorrow.
他明天肯定会来。
I thought it certain to be late.
我肯定会迟到。
2、在句中用了形式主语或形式宾语 it 时不用sure。
扩展资料：
be certain to do 和be sure to do表示“一定”或“确信”，有时可互换。通常后接。如：
He's certain [sure] to win. 他一定会成功。
They're certain [sure] to need help. 他们肯定需要帮助。
If you do this, you are certain [sure] to be found out. 如果你这样做一定会被发现。
第2个回答 2024-02-21
一，相同点:
be sure 和be certain 都可以表示“一定，必然”等意思。例如:
Be sure to win the game! 一定赢得比赛！
It's certain for us to finish the task on time.
我们一定能按时完成这项任务。
二，不同点:
1，be sure 经常用人来做主语，即构成 sb be sure to do sth/sb be sure of sth/sb
be sure about sth/ sb be sure that 等搭配用法。例如:
I'm sure to go to the market at ten a.m.
我当然会在早晨十点去市场。
Tom is sure to come over and help out.
汤姆一定会过来帮忙的。
2，be certain 主语往往是形式主语 it或者事物，即构成 It's certain to do sth/It's certain that 等结构搭配。例如:
It's certain that Mary will win the long jump
game.玛丽一定会赢得跳远比赛。
be sure 和be certain 都可以表示“一定，必然”等意思。例如:
Be sure to win the game! 一定赢得比赛！
It's certain for us to finish the task on time.
我们一定能按时完成这项任务。
二，不同点:
1，be sure 经常用人来做主语，即构成 sb be sure to do sth/sb be sure of sth/sb
be sure about sth/ sb be sure that 等搭配用法。例如:
I'm sure to go to the market at ten a.m.
我当然会在早晨十点去市场。
Tom is sure to come over and help out.
汤姆一定会过来帮忙的。
2，be certain 主语往往是形式主语 it或者事物，即构成 It's certain to do sth/It's certain that 等结构搭配。例如:
It's certain that Mary will win the long jump
game.玛丽一定会赢得跳远比赛。
