我很担心我的考试成绩会不好。

Wǒ hěn dānxīn wǒde kǎoshì chéngjì huì bù hǎo.

I'm very worried that my test results will be bad.

我明天就要开始在美国工作了，我有一点担心。

Wǒ míngtiān jiù yào kāishǐ zài Měiguó gōngzuò le, wǒ yǒu yìdiǎn dānxīn.

Tomorrow I will start working in The States. I'm a little worried.

不用担心我，我会自己照顾自己的。

Búyòng dānxīn wǒ, wǒ huì zìjǐ zhàogù zìjǐ de.

Don't worry about me, I can take care of myself.