Know for a certainty that...
确实知道...
🧩 词语组成解析
know
[no]
v. 知道;了解;认识;确信;
n. 知情;
for
[fɚ]
prep. 为，为了;倾向于;关于;当作;
conj. 因为，由于;
🗣️ 情景例句
You gave them to Richard.
你交给了Richard。
We are sure both of us have a brighter future.
我们相信双方都有一个光明的前景。
By the end of next month.
下个月底。