Meaning of zhèng hǎo:
正好
just (in time); just right; just enough; to happen to; by chance; it just so happens that
Wǒ dào jiā de shíhòu, wǎnfàn zhènghǎo zhǔnbèi hǎole.
我到家的时候，晚饭正好准备好了。
When I got home, dinner was just ready.
Zhè jiàn yīfú de dàxiǎo duì wǒ lái shuō zhènghǎo.
这件衣服的大小对我来说正好。
The size of this dress is just right for me.
Wǒ lái de zhènghǎo, méi cuòguò rènhé shìqíng.
我来得正好，没错过任何事情。
I arrived just in time and didn't miss anything.
Wǒ zhènghǎo zài fùjìn, suǒyǐ kěyǐ lái jiē nǐ.
我正好在附近，所以可以来接你。
I happen to be nearby, so I can come to pick you up.
Wǒ qù shāngdiàn de shíhòu zhènghǎo xià yǔ.
我去商店的时候正好下雨。
It was raining just as I went to the store.
Wǒ jīntiān xiūxi, zhènghǎo kěyǐ qù kàn diànyǐng.
我今天休息，正好可以去看电影。
I'm off work today; it just so happens that I can go to the movies.
to chance to
Wǒ qù shìchǎng, zhènghǎo yùdào le yīgè lǎo péngyǒu.
我去市场，正好遇到了一个老朋友。
I went to the market and chanced to meet an old friend.
