He__(write)a novel since last month and will finish it soon填什么?

问题描述:

He__(write)a novel since last month and will finish it soon
填什么?

has been writing
过去完成进行时,并会持续到以后

has been writing,
现在完成进行时
有SINCE表示“自从”就绝对完成时。
will finish it soon表示还没有写完,事情还要继续进行下去,所以: 完成时+进行时

has been writing 一直在写
“since+过去时间”用于“现在完成时(have/has done sth.)表示已完成的动作”或“现在完成进行时(have/has been doing sth.)表示一直在持续的动作”,根据后半句“will finish it soon(不久将完成)”,表明还没写完,所以用现在完成进行时.
整句意思:自从上个月以来他就一直在写小说,不久就将写完.