The difference in pronunciation between Japanese and English.

vor 6 Jahren

Japanese native speakers often struggle when they try to learn English, especially pronunciation. The Japanese language doesn't have sounds like "R", "L", and "th". So they struggle to correctly pronounce the words that contain those letters. On the other hand, English native speakers tend to have a hard time to master Japanese "R" sound, which actually closer to "D" sound in English. 
Any thoughts? 