join in 、join、take part in attend的区别：join in意为加入，强调参加活动；join意为接合、联结，侧重指参加某组织并成为其中一员；take part in意为参与，侧重指参加者持有积极的态度；attend意为出席，侧重指出席正式的活动或场合。
一、join in的含义及用法
join in意为加入、参加，例句有：
1、I hope that everyone will be able to join in the fun
我希望每个人都能够加入进来，玩得开心。
2、You still have time to join in the fun.
现在加入其中享受快乐还来得及。
3、I didn't want to join in, but Kenneth insisted.
我不想加入，但是肯尼思非要坚持。
4、We're going to play football. Do you want to join in?
我们去踢足球，你来不来？
二、join的含义及用法
1、作为动词，意为连接;接合;联结;结合;联合;汇合;成为…的一员;参加;加入。
例句：Join one section of pipe to the next.
将一段管子与相邻的管子连接起来。
The path joins the road near the trees.
这条小路在树林旁与公路汇合。
2、作为名词，意为结合;连接;接合点。
例句：The two pieces were stuck together so well that you could hardly see the join.
这两块粘合得太好了，几乎看不出接缝。
三、take part in的含义及用法
take part in意为参加;参与。
例句：The officer refused to let his men take part in the operation.
这军官拒绝让他的士兵参加这项军事行动。
You don't need strength to take part in this sport
参加这项运动不需要太多体力。
You can take part in activities from canoeing to bird watching.
你可以参与从划独木舟到观鸟等各种活动。
四、attend的含义及用法
attend作为动词，意为出席;参加;经常去，定期去(某处);注意;专心。
例句：We'd like as many people as possible to attend.
我们希望出席的人越多越好。
Our children attend the same school.
我们的孩子上同一所学校。
She hadn't been attending during the lesson.
上课时她一直不专心。
