1、关心
...concern oneself in关心，忙于concern oneself about关心，忙于in concert with sb.与……一致 ...
2、忙于
...concern oneself in关心，忙于concern oneself about关心，忙于in concert with sb.与……一致 ...
3、为
... composed of 由...合成,由...组成。 concern oneself about 为...处忧,为...介意。 confer...on 以...授与,以...赋与。 ...
4、挂念
... concentrate(...)on... （把...）集中在... concern oneself about 关心，挂念 consist in 在于 ...
concern n oneself about担心
for concern oneself about担心
concern oneself about with关心
concern oneself about sth从事;忙于
concern oneself about ith关怀