英语单句改错1.Yououghttohelphim,butyoudidnot.2.Theroomissoquiet.Theymusthavebeenasleepnow.3.WeoughttonotgiveuplearningEnglishhalfway.

Question

英语单句改错
1.You ought to help him,but you did not.2.The room is so quiet.They must have been asleep now.3.We ought to not give up learning English halfway.

Answer 1

1.You ought to have helped him,but you did not.ought to have done意思是：本应做但没做,而ought to do的意思是应该做（表示将来）,从后半句来看,显然不能用ought to do2.The room is so quiet.They must be asle...