你先别紧张，慢慢来，一定能做好。

Nǐ xiān bié jǐnzhāng, mànmàn lái, yídìng néng zuòhǎo.

Don’t be nervous; take it slowly, you will definitely do it well.

老师定了下周考试的时间。

Lǎoshī dìng le xiàzhōu kǎoshì de shíjiān.

The teacher set the time for next week’s exam.

我们几点出发还没确定。

Wǒmen jǐ diǎn chūfā hái méi quèdìng.

We haven’t decided what time we will leave.