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
Are you excited about graduating from high school?
你从高中毕业会不会感到很兴奋呢？
Don't blow it out of proportion.
别小题大做了。
Ready? Go! Mr. Hu shouted, and the boys started to run.
“预备--跑！”胡先生喊道，男孩子们开始跑。