为什么can be 后跟 found 而不跟findI do not think alien ———— in spaceI do not think alien can be ———— in space

be found...后跟什么形式 为什么can be 后跟 found 而不跟findI do not think alien ———— in spaceI do not think alien can be ———— in space they can be found File can't be found! Lost Time can never be found can后跟（英语） The Referer could not be found (can be left blank). Supplementary data associated with this article can be found water can be found on the earth and in the temporary toilet can be found next to the recycling centre. Unless the police can prove to the court that Ted has committed robbery ,he ___.A will not find guilty B will not be found guilty C will have found guilty D will not have found guilty 为什么? be found be going to后跟什么? be going to do 后跟 是Maybe you can in our school concert还是Maybe you can be in our school concert重点在于can后跟不跟be be动词后跟的是形容词,动词后跟副词吗, will 后跟动词 will be 后跟名词对吗? 英语be动词结构是什么?介词后跟动词ing是什么为什么 be+动词ing是什么为什么我刚开始学英语