2titanic
春芽
共回答了14个问题采纳率:100% 举报
keep up with和catch up with 都有赶上某人,使自己不落后 的意思,但前者注重保持此时状态,而后者注重超越此时状态而赶上别人.eg.Your English is terrible ,if you do not work hard,you will not catch up with others.eg.I must work hard ,or I will not keep up with my classmates.
1年前
3