1.The cake must be being cooked.
這個蛋糕肯定已經焗好了。
2.The cake has been cooked for an hour.
這個蛋糕已焗了一個小時。
3.The cake must have been being cooked.
這個蛋糕必須要焗到熟為止。
1.The cake must be being cooked.
蛋糕肯定是正在烤焗當中。
2.The cake has been cooked for an hour.
蛋糕已經焗了一個小時。
3.The cake must have been being cooked.
蛋糕肯定已經是在烤焗當中。