join sb in doing Sth 中的in可省略吗:-).join in doing Sth 等于take part in Sth,后者不能省略

join sb in doing sth 是什么意思? join sb.in sth. 可不可以说join sb.in doing sth.有没有例句? join sb in sth / join sb in doing sth 都对么?意思上一样么?attend 和join ...简短说下.3 join sb in doing sth 属于 join 及物动词的用法吧。 join sb in doing Sth 中的in可省略吗:-).join in doing Sth 等于take part in Sth,后者不能省略 join sb in doing还是join sb doing join join in join sb. in sth.的区别 join sb in sth汉语意思join sb in sth； take an active part in sth的汉语意思是什么? sb.spend time(in)doing sth. sb in doing sth 是there is nothing wrong with sb in doing sth help sb doing sth sb doing sth是什么意思? stop sb doing sth suggest sb doing sth sb spend + doing sth sb was doing sth take part in和join in 和 join后可以加doing sth 形式么? join sb in.join sb in.