Whether working alone or in a group,students share ideas and
Whether working alone or in a group,students share ideas and discussions on the subject being（未完
studied（这里为什么是用being studied而不是studied）
studied（这里为什么是用being studied而不是studied）
赞 angelo519485 幼苗
共回答了20个问题采纳率：90% 举报
这里的being studied的being强调的是正在被研究学习的科目.如果无being就不是正在的意思.being done是现在时的被动语态
1年前
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