我因为粗心而经常犯错。

Wǒ yīnwèi cūxīn ér jīngcháng fàncuò.

Because I'm careless I often make mistakes.

他人比较粗心，记性也不好。

Tā rén bǐjiào cūxīn, jìxìng yě bù hǎo.

He is rather careless, and his memory isn't good either.

爸爸通常比妈妈粗心。

Bàba tōngcháng bǐ māma cūxīn.

Dad is usually more careless than mother.