It's necessary that we spend some time after class listening(为什么不用 to listen)to tapes and practice（这里为什么不用ing形式 中间有个and啊） reading and imitating.in a matter of seconds这个是什么意思
问题描述：
It's necessary that we spend some time after class listening(为什么不用 to listen)to tapes and practice（这里为什么不用ing形式 中间有个and啊） reading and imitating.
in a matter of seconds这个是什么意思
答
spend some time doing sth固定搭配we spend some time after class listening to tapes and / practice reading and imitating. practice和spend是并列的in a matter of seconds 几秒钟的事