lǎoshī / wèn / nǐ men / zhōumò / yǒu / méiyǒu / shíjiān / cānjiā / xuéxiào / de / zhìyuàn / huódòng

老师问妳们周末有没有时间参加学校的志愿活动。

The teacher asked if you all have time to participate in the school's volunteer activity this weekend.