I wonder how he ___ that to the teacher.

題目：

I wonder how he ___ that to the teacher.
A.dare to say B.dare saying C.not dare say D.dared to say
爲什麼?dare在這裡做情態動詞還是實義動詞

解答：

這裡是實義動詞
情態動詞的標誌是接動詞時用原型,否定時在情態動詞後+not
這裡是是實義動詞,後面+不定式,實義動詞的否定形式在實義動詞前+助動詞+not,如don`t,doesn`t
如果看成情態動詞,答案應爲dared say
再比較一下否定句式
I know he dares not say that to teacher.
I know he doesn`t dare to say that to teacher.
我知道他不敢對老師說那樣的話.