玩过山车很危险。

Wán guòshānchē hěn wēixiǎn.

Riding rollercoasters is dangerous.

你这样过马路很危险啊！

Nǐ zhèyàng guò mǎlù hěn wēixiǎn a!

Crossing the road like this very dangerous!

做他的乘客感觉很危险！

Zuò tā de chéngkè gǎnjué hěn wēixiǎn!

It feels dangerous to be his passenger!