四十

sì shí wàn

四十万

four hundred thousand

sì shí zhōu nián

四十周年

fortieth anniversary

sì shí nián dài

四十年代

in the forties

sì shí duō suì de rén

四十多岁的人

forty-something

sì shí suì shēng rì

四十岁生日

one's fortieth birthday

dì sì shí

第四十

the fortieth

còu gè zhěng shù jiù sì shí kuài qián ba

凑个整数，就四十块钱吧。

Make it a round figure-say forty dollars.

dào jīn nián qī yuè tā men jié hūn jiù yǒu sì shí nián le

到今年七月他们结婚就有四十年了。

They would have been married forty years come this July.

tā zài sū gé lán dù guò le zì jǐ de sì shí suì shēng rì

他在苏格兰度过了自己的四十岁生日。

He spent his fortieth birthday incommunicado, in Scotland.