tā / píng shí / bú shì / néng lì / bú gòu / zhǐ shì / zuò shì / yǒu diǎn / mǎ dà hā / cháng cháng / wàng jì / dài / yào shi

他平时不是能力不够，只是做事有点马大哈，常常忘记带钥匙。

He is not lacking in ability; he is just a bit scatterbrained and often forgets to bring his keys.