在句子He is whitening the house中,生成whiten的构词方法是( )。
                    举一反三
- 单词mindful是通过什么构词方法生成的单词?
 - 变格是指名词、形容词等在句子中的词形变化,以实现它的构词功能。
 - The dog is missing. He shouldn't have let the dog go out of the house alone. The possible meaning of the sentence is:____ A: He is being praised for he has let the dog go out of the house alone. B: He is being asked to let the dog go out of the house alone. C: He is being complained for he has let the dog go out of the house alone. D: He is being expected to find the dog that has gone out of the house alone.
 - 现代汉语构成新词所广泛使用的方法是______。 A: 重叠构词 B: 简缩构词 C: 附加构词 D: 实语素与虚语素的复合构词
 - He saw the _____ of a house against the sky.
 
