請老師幫我看看這題.It was __that they planned to have a picnic.

題目：

請老師幫我看看這題.It was __that they planned to have a picnic.
A.such fine weather B.so fine a weather C.such a fine weather as D.such a fine weather 那個答案是B項,爲什麼不能選A呢,weather 爲不可數名詞吧.

解答：

是這樣的, such後面只能跟不可數的名詞比如weather 是一定不能加a的,如果後面可數了那麼一律跟單數.
所有C,D不能選
so .. a 是一種固定搭配,不管可數與否,都要這樣用.這沒有辦法.
A選項也可以選,我想不出任何原因不能選A,這題出的有問題