老板在仔细观察大家的工作表现。

Lǎobǎn zài zǐxì guānchá dàjiā de gōngzuò biǎoxiàn.

The boss is carefully observing everyone's performance.

你仔细看一下我今天有什么不同。

Nǐ zǐxì kàn yíxià wǒ jīntiān yǒu shénme bùtóng.

Look carefully to see if there is anything different about me today.

你仔细检查一下货品有没有问题吧。

Nǐ zǐxì jiǎnchá yíxià huòpǐn yǒu méiyǒu wèntí ba.

Carefully check the goods for any problems.