Question

"If I hadn't pratised when I was younger,” the musician says,"I____able to play so well now."

Answer 1

"If
I
hadn't
pratised
when
I
was
younger,”
the
musician
says,"I____able
to
play
so
well
now."
为什么答案是"
wouldn't
be
"而不是"
wouldn't
have
done
"？
这是因为：从句和主句的时间不一样，从句是与过去的事实相反，用过去完成时，而主句的时间是now，现在，所以应该与现在的事实相反，用与现在事实相反的wouldn't
be
。