我wǒ怀huái疑yí他tā在zài说shuō谎huǎng。

I suspect he is lying.

她tā对duì这zhè件jiàn事shì表biǎo示shì怀huái疑yí。

She expressed doubt about this matter.

我wǒ从cóng未wèi怀huái疑yí过guò你nǐ。

I have never doubted you.

警jǐng察chá怀huái疑yí他tā偷tōu了liǎo钱qián。

The police suspect that he stole the money.

我wǒ有yǒu点diǎn怀huái疑yí这zhè个ge消xiāo息xī。

I am a bit doubtful about this news.