Can I use "Would" instead of the infinitive?

grammaticality indirect-speech

"Would" is used after past reporting verbs where "will" was used in direct speech. This is contained in Practical English Usage (Michael Swan, OUP 1995, n° 604, indirect speech). Therefore, the two formulations can be used for the same purpose.

(PEU)
direct: Tomorrow will be fine.
indirect: The forecast said that the next day would be fine.

reporting verbs: resources for learning english

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