语法

ADJ to-inf

The 'sure' group

These adjectives are used to tell someone to do something.
When preparing your own food at home, be sure to check the list of ingredients carefully.
Careful is also used to indicate that someone makes sure they do something.
The authors are careful to stress the risks to eyesight posed by solar observation, and describe how to make use of photographic and photoelectric equipment.
  • careful
  • sure
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