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
问题描述：
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
答
be up to sb. 取决于~~
be up to doing 可做
答
问错人了， 还以为是日语谐音
答
1，准备做某事
2，现在正准备让谁做某事
3，看你的了
答
一般都是be up to doing sth,意思是适合，胜任
木有be up to do吧。。要么就是少了个动词表示被动，比如 be set up to do sth
be up to sb to do sth 意思是 有谁决定做什么
所以it is up to you 意思是 这由你来决定
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...