根据要求写出下列单词的相应形式 1. teach(名词)______________ 2. leave(过去式)_______________ 3. leaf(复数)_______________ 4. realize(现在分词)_______________ 5. forget(过去分词)_______________ 6. early(比较级)________________ 7. final(副词)________________ 8. break(过去分词)_______________ 9. rush(第三人称单数)______________ 10. really(形容词)________________