Question

解決問題的人謝謝你們！

想請問12題
我記得有一個文法是建議命令的後面要放原型動詞
所以在recommend 後面不是應該要選（a） use嗎

American Dental Association (ADA), toothbrushes can (harbor bacteria. These germs come from the
mouth and can 11
in toothbrushes over time.
Many Americans replace their toothbrushes only once or twice a year. The ADA, however,
recommends 12 a new toothbrush every three to four months. Children's toothbrushes may need to
be changed more 13
During those three to four months of use, there are several ways to keep a toothbrush clean. 14
rinse your toothbrush thoroughly with tap water after use, making sure to remove any toothpaste and
debris. Store your toothbrush in an upright position, and let 15 air dry. Most importantly, do not
share toothbrushes.
11. (A) accumulate F
12. (A) use
13. (A) essentially
(B) crumble
(B) to use
(B) frequently
(C) establish
(C) using
(C) typically
(D) radiate
(D) used
(D) objectively

Answer 1

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Terry

那個文法是在後面接名詞子句裡面，這個時候因為省略了一個should就會用VR，但是這題後面沒有名詞子句（它沒有主詞），所以這裡單純是動名詞當受詞而已
如果你要用你說的那個用法可以寫成The ADA recommends that people (should) use a new toothbrush every three to four months.