the building project to be carried out next year is ,i think ,not easy to complete in time为什么要用to complete 而不用to be completed
问题描述：
the building project to be carried out next year is ,i think ,not easy to complete in time
为什么要用to complete 而不用to be completed
答
这里主语不是物体，不需要被动啊
答
这个to complete 是指 the building project
也就是 ithink（it is）not easy to complete ……
→be动词 + to do、
答
在某些“形容词＋不定式”做表语或宾语补足语的结构中,句子的主语或宾语又是动词不定式的逻辑宾语时,这时常用不定式的主动形式表达被动意义.这些形容词有nice,easy,fit,hard,difficult,important,impossible,pleasan...
答
原句省略了for somebody，加进去就好理解了。
比如：the building project to be carried out next year is ,i think , not easy FOR THEM to complete in time