The sentence:You don’t need to bring anything. There’ll be sandwiches to eat and juice to drink.
The explaination:"to eat" and "to drink" are verbs in the infinitive form and they describe the purpose of the nouns they follow (the sandwiches are to be eaten and the juice is to be drunk). They could be omitted, although the sentence would not sound as natural, and in a different situation, it might not be as clear.
Could you enlighten me,please?
???????? Could you enlighten me,please? What is the issue for you?
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?????? ????????Could you enlighten me,please?
What is the issue for you?
Infinitives can post-modify a noun or adjective.
I brought a book. (Maybe the book is a gift. Maybe you went to the half-price book store and want them to sell it for you. Maybe you are required to bring a book to the class. The situation is unclear.)
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