How to say HEART, HURT, and HEARD

Today’s question is from a website visitor:    ”I can’t tell the difference between HEART, HURT, and HEARD.  How do I say them?” HEART has three sounds:  H, ARE, T HURT has three sounds:  H, ER, T HEARD (or HERD) has three sounds:  H, ER, D The big difference in these sounds are the R