be up to do be up to doing be up to sb to do sth it is up to you _英语解答

be up to do be up to doing be up to sb to do sth it is up to you 他们之间有何区别?
哪be up to doing
be up to do 有忙于做某事的意思么

人气：338 ℃　时间：2019-08-17 16:31:16

解答

（1）没有be up to do这种说法.（2）be up to doing sth.（体力或智力上）能胜任：I'm not up to going to work today.今天我不能去上班.（可能是身体不舒服.）（3）be up to sth.（体力或智力上）能胜任：He is not...