To one's (or your) heart's contentといいます。I've been eating strawberries to my heart's content, or The youngsters played in the sand to their hearts' content. こんな風に使われます。heart's content 単数形、hearts' content 複数形、アポストロフィーの位置に注意すればいいでしょう。
http://www.youtube.com/watch?v=QInuFYRZwPw 1:48 eating and drinking to their hearts' content. 心ゆくまで飲んだり食ったり
http://www.youtube.com/watch?v=eYFfPh8rVS4 1:12 Genius app for your phone that allows you to actually see what's ahead of you while texting to your heart's content
http://www.youtube.com/watch?v=AHnDvGP3RfQ 0:18 there are still small record stores where music lovers can browse to their hearts' content.
http://www.youtube.com/watch?v=8ZJOKJNjLuQ 1:05 the bats can sip to their hearts' content.
練習問題解答
a-993 until your heart's content
a-9801 to my heart's content
