用所给单词的适当形式填空.

问题描述:

用所给单词的适当形式填空.
She's teaching the students______(sing)an English song.

填写singing.她正在教学生们唱英文歌teach sb doing sth是正在教的意思teach sb to do sth是已经教完的意思例句:He thaches me playing football他正在教我踢足球He teaches me to plya football他教完了我踢足球...