可以啊,在定从中,短语中的介词可放在原来的位置,也可和关系代词一起提到前面,构成:"介词+关代"结构,来引导定从.which thousands of students across China took part in=in which thousands of students across Chin...我想问一句take part in分开了难道意思完整吗，难道他不是固定搭配吗？还有这个“某些不可分割的固定搭配, 或动词短语就不能将其介词提前”能不能多举几个例，我记一下。谢了。不可分割的固定搭配, 或动词短语举例: break down 出故障 come to苏醒 die away逐渐消失give in 让步grow up长大 pass away去世 look out当心show off炫耀run out耗尽 turn up出现 come out开花,出版 fall off减少，脱落pull up停下 add up to 加起来是catch up with赶上 get along with与……相处make up for 补偿live up to 不负于，实现 go on with继续look forward to 盼望get away with逃避 get through with完成get down to 认真，从事look down on(upon) 轻视look out for警惕keep up with赶上go in for 当心, 提防get out of 离开, 脱离