I expect____(finish)the work by the end of next week I have something important____(tell)youto have finished,to tell 问 为什么,第一个加have,第二个不加,
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I expect____(finish)the work by the end of next week I have something important____(tell)youto have finished,to tell 问 为什么,第一个加have,第二个不加,
I expect____(finish)the work by the end of next week I have something important____(tell)you
to have finished,to tell 问 为什么,第一个加have,第二个不加,
I expect____(finish)the work by the end of next week I have something important____(tell)youto have finished,to tell 问 为什么,第一个加have,第二个不加,
现在理解你后面为什么提那个完成时的问题了：
i expect to have finished=i expect that i will have finished将来完成时,用不定式替换了,强调“希望将来某一个时间之前（能够）完成”,不定式本身就可以有将来的蕴涵,所以后面一个用不定式to tell作为后置定语修饰something,“将来（在说话时间之后）告诉你”.
句子应该是I expect to have finished the work by the end of next week ,I have something important to tell you .
by the end of 决定前者用完成时态，后者是have sth to do
嗯，区别就是句中出现by时，句子用完成时态，后句是一个固定用语。