Question

I haven't decided yet ________ some underwater plants.

1. A.
   whether to get
2. B.
   what to get
3. C.
   whether getting
4. D.
   how getting

Answer 1

A
動(dòng)詞不定式的前面有時(shí)可以帶一個(gè)連接代詞或連接副詞構(gòu)成一個(gè)不定式短語(yǔ)．這種結(jié)構(gòu)接近于一個(gè)名詞從句．例如：
The policeman told the old woman which bus to take(＝which bus she should take. )
警察告訴那位老大大乘坐哪一路公共汽車(chē)。
其實(shí)這種結(jié)構(gòu)在句子中還可以用作主語(yǔ)。這時(shí)它的意義接近于一個(gè)主語(yǔ)從句。