作业帮【高一英语】一道有关语态选择题
来源：学生作业帮 编辑：拍题作业网作业帮 分类：英语作业 时间：2024/05/13 01:31:43
【高一英语】一道有关语态选择题
Recently,however,scientist _______ that long term use of chemical fertilizers can cause damage to the land and,even more dangerous,to people's health.
A.found
B.have founded
C.have been finding
D.have been founding
为什么要用被动语态?难道科学家是被动发现这个问题的吗?
Recently,however,scientist _______ that long term use of chemical fertilizers can cause damage to the land and,even more dangerous,to people's health.
A.found
B.have founded
C.have been finding
D.have been founding
为什么要用被动语态?难道科学家是被动发现这个问题的吗?
have been finding是现在完成进行时 不是被动语态 Recently是现在完成时或完成进行时的标志词 此题表示动作的持续性所以用完成进行时 欢迎再问哟