我的记性不太好，常常忘记事情。

Wǒ de jìxìng bù tài hǎo, chángcháng wàngjì shìqíng.

My memory is not very good; I often forget things.

你要提高记性就多做一些记忆训练。

Nǐ yào tígāo jìxìng jiù duō zuò yīxiē jìyì xùnliàn.

If you want to improve your memory, do more memory exercises.

学习新东西有助于提高记性。

Xuéxí xīn dōngxī yǒu zhù yú tígāo jìxìng.

Learning new things helps improve memory.