短语一起记

1. for certain 确定地、确实地

2. make certain 弄清楚、确定、确保

3. sure thing 必然之事

最容易被混淆的单词

certain / sure 都有“确定的、确信的”意思。有时两者可互换，但注意用法不同。

be sure to do sth和 be certain to do sth都表示“肯定”，但后者更为确信。

可用it's certain that...的句型，但没有it's sure that...这种表达。

· Are you sure / certain (that) he will come?

你确定他会来吗？

· It is certain that he will come.

他肯定会来。

单词大挑战

Q I don't know ______ when the meeting will begin.

1. with certain 2. in certain 3. for certain //HFqpX6lfZ3bMRgmpH9JFexJjyi9QydUcF+RnD4+fbtnE3harQVcucZWIGJ7KYx