Yes,"play guitar" we call "弹吉他".we're usually call "弹" to express play anything musical instruments by finger.For example,play lute we call "弹琵琶".And use "拉" to play anything musical instruments by bow."play violin" we call "拉小提琴".To play anything by mouth,we call "吹".For example playing the saxophone. By finger use "弹" By bow use "拉" By mouth use "吹"

if you want to express "you have the sill of playing 吉他" then you can say "我会弹吉他"， if you want to express playing 吉他 is one of your hobbies then you can say"我弹吉他"。 e.g. A:你平时玩乐器吗？ B:我弹吉他。 A:你会什么乐器吗？ B:我会弹吉他。

I play guitar. 我（会）弹吉他。

play guitar = 弹吉他 pinyin is tan ji ta .

我在弹吉他。 (wo3 zai4 tan2 ji3ta3) I play guitar = I am playing guitar. I can play guitar = 我会弹吉他。