没想到

wǒ wàn wàn méi xiǎng dào huì yù jiàn tā

我万万没想到会遇见她。

I never expected to meet her.

wán quán méi xiǎng dào tā guò de fēi cháng kuài huo

完全没想到，她过得非常快活。

Against all expectations , she is enjoying herself.

wǒ méi xiǎng dào nǐ huì zhè yàng

我没想到你会这样。

I expected better of you.