区分一下sth be supposed to do和sth be supposed to be done

区分一下sth be supposed to do和sth be supposed to be done
区分一下sth be supposed to do和sth be supposed to be done

区分一下sth be supposed to do和sth be supposed to be done
前者主动,后者被动.由于是STH,因此,主动的情况下应该较少.
The clock is supposed to work.钟当是正常的（能工作）.
The work is supposed to be done by Fri.

某物应该去做什么 某物应该被用作什么

区别在to do 和to be done 上，一个是应该去做，一个是应该做过

sth be supposed to do 是某事应该去做
sth be supposed to be done 是某事应该被做