Many Chinese learners think 常常and 经常are the same . Please remember 经常 can use either in positive sentences or in negative sentences,but 常常 usually only use in positive sentences. 我不常常说中文is not a good sentence.
Wow. Great. 常 can be used in the future and also can be an adjective to decorate a noun.
经常 can also be used in the future, 常常 can't.
经常 can also be used as an adjective, 常常 can't.
How about just 常?
Yes , 常 can ues in negative sentences as well as positive sentences. 我常说中文 and 我不常说中文 both are correct.
Great information! I'd like to piggyback on what you said. 我不常常说中文is not a good sentence, but we will say 我不常說中文。 You can use 常常 in positive sentence and 不常 in negative sentence.
Great, thank you! That is good to know, because I see them used interchangeably, but I never considered the negation of each...