I cannot. It's something a Dutchman does not seem to hear. Should I do something about it? Dutch speakers have trouble distinguishing between bat, bad, bet and bed or between back, bag, beck and beg. This is because Dutch does not distinguish between [æ] and [ɛ]. Is the accent Dutch have when talking English ugly.
don't worry it seems like that at the begining levels but when you listening alot you'll practice to distinguish between all of them , why don't try to record your sound and try to get the wrong pronouncing after using google to know the right sound how looks like this is good idea , i am also not native English speaker but for me it's quite different because i am native Arabic speaker it easier for me to pronounce them .
good luck
