Student or Learner
According to this closed thread: http://www.usingenglish.com/forum/th...nning-thinking, they achieved the summary that both present perfect continuous and present perfect tense can be applied to the verb "plan".
My questions are
1. If I use past continuous "were planning", is there any differences?
2. Do all three tenses above show us that arranging plan was finished in the past already?
1 Yes- the past continuous means that the plan was in the past and suggests that the plan did not come to fruition.
2 The present perfect continuous could suggest that they are still planning now.