v.aux.

1. （表示義務，責任等）應當，應該
   Students ought to study hard.

   學生應該努力用功。

2. （表示願望）應該，該
   You ought to read his novels.

   你應該讀讀他的小說。

3. （表示可能性，期望）該
   It ought to be a fine day tomorrow.

   明天該是好天氣。

modal v.

1. used to indicate duty or correctness.
   ▸used to indicate a desirable or expected state.
   ▸used to give or ask advice.
2. used to indicate something that is probable.

n.

pron.