Dōro o wataru toki wa, kuruma ni chūi shite kudasai.

Please be careful of cars when crossing the street.

Sensei wa jugyōchū ni nete iru seito ni chūi shita.

The teacher warned the student who was sleeping during class.

Mēru o kaku toki wa, goji ni chūi shimashō.

Let's pay attention to typos when writing an email.

Suberiyasui node, ashimoto ni chūi shite kudasai.

Please watch your step because it is slippery.

Kare wa chikoku shite, buchō ni chūi sareta.

He was warned by his manager for being late.

Samui fuyu wa, kenkō kanri ni chūi suru hitsuyō ga arimasu.

During the cold winter, it is necessary to pay attention to managing one's health.