1. can only be associated with something or doing something. If you want to contact someone. You must join someone. ; Join can be to join something, to join something for something or to join someone. Do sth.

He started singing, and I joined in. ?

He began to sing, and then I sang along.

2. You must join the Party at the grassroots level. ?

You have to join the grassroots party organization.

3, cadres to different grass-roots units to participate in labor. ?

Cadres go to grass-roots units to participate in labor respectively.

Second, participation refers to participating in an activity or thing and actively participating; Join generally refers to entertainment activities or events, and the activities have already begun when you participate.

1, you don't have to join in; There are enough people doing this job. ?

There are enough people, so you don't have to intervene.

The main rebel groups have agreed to attend a meeting to establish a transitional government. ?

The main rebel groups have agreed to attend the meeting to discuss the establishment of a transitional government.

You can take part in activities ranging from canoeing to bird watching. ?

You can take part in all kinds of activities, from canoeing to bird watching.

Third, the pronunciation is different.

Join: English [d? n]； Beauty [d? n]

Participation: English [[[[teik pɑ:t in]；]; ]; Beauty [tek pɑrt? n]？

Join: English [din in]; Beauty [d? n？ n]？

Extended data

Synonym: participate in, participate in

I. Participation

English [pɑ:? Tisipeit in] beauty [pɑr? t？ spet？ n]

They expect him to attend the ceremony?

They want him to attend the ceremony.

Second, participate.

Britain [tends to be] beautiful [t? nd]

Attendance rate of intransitive verbs; Devote oneself to; Service, care; watch out for

Participate, participate; [Common passive voice] Accompany (as a result or situation); Take care of; accompany

We are forced to attend meetings every day?

We must attend the meeting every day.