1. 你肯定吗?

[ nǐ kěn dìng ma ? ]

Are you sure?

2. 一定要小心!

[ yī dìng yào xiǎo xīn ! ]

To be careful!

3. 由你决定。

[ yóu nǐ jué dìng 。 ]

It's up to you.

4. 做个决定吧。

[ zuò gè jué dìng bā 。 ]

Make up your mind.

5. 只要你肯尝试，你一定能做这件事。

[ zhǐ yào nǐ kěn cháng shì ， nǐ yī dìng néng zuò zhè jiàn shì 。 ]

If you would only try, you could do it.

6. 只要你觉得某事值得去做，就一定要把它做好。

[ zhǐ yào nǐ jué dé mǒu shì zhí dé qù zuò ， jiù yī dìng yào bǎ tā zuò hǎo 。 ]

What is worth doing is worth doing well.

7. 他决定起诉他的老板。

[ tā jué dìng qǐ sù tā de lǎo bǎn 。 ]

He decided to bring a suit against his boss.

8. 我决定什么都不改变。

[ wǒ jué dìng shén me dōu bù gǎi biàn 。 ]

I determined that nothing should be changed.

9. 然而，苏珊却还没有决定。

[ rán ér ， sū shān què hái méi yǒu jué dìng 。 ]

However, Susan has not really made up her mind yet.