下班时他常常顺路买菜。

Xiàbān shí tā chángcháng shùnlù mǎicài.

When he gets off work, he often buys groceries on the way.

小时候我常常在河边玩。

Xiǎoshíhou wǒ chángcháng zài hébiān wán.

When I was little, I often played by the river.

有时间的话，我们周末一起去爬山吧。

Yǒu shíjiān dehuà, wǒmen zhōumò yìqǐ qù páshān ba.

If we have time, let's go hiking together this weekend.