[Anne59]

I found the following:-

carrot is r [not silent]
cry is r [not silent]
friend is r [not silent]
free is r [not silent]
garden is r [silent]
hear is r [silent]
German is r [silent]
here is r [silent]
four is r [silent]
learn is r [silent]

but I don't understand when R is silent or not? Is there a rule or can anyone explain it to me?

Thanks