the field in which we can cooperate 中 in 是 和谁搭配的

问题描述:

the field in which we can cooperate 中 in 是 和谁搭配的

可以用代入法和提出法让他更透彻点,比如,we can cooperater 把in the fileld代进去,这样就清晰了,没介词的要加where=in which,