敢是

tā hǎo jiǔ méi gěi wǒ xiě xìn le gǎn shì wàng le wǒ de dì zhǐ

她好久没给我写信了，敢是忘了我的地址？

She hasn't written to me for ages; perhaps she's lost my address.

zhè bù xiàng shì qù yī yuàn de dào wǒ men gǎn shì zǒu cuò le ba

这不像是去医院的道，我们敢是走错了吧。

This doesn't seem to be the road to hospital, perhaps we came the wrong way.

gǎn shì nǐ bù yuàn yì

敢是你不愿意。

Maybe you are not willing.