0These leaves01b00 01font00will02font00 have turned02b00 red by next month.02br 02br 00This sentence is future perfect. I'm wondering if I can use other modals to replace "will". For example:02br 02br 00These leaves 01b01font00could02font00 have turned02b00 red by next month.02br 02br 00These leaves01b00 01font00may02font00 have turned02b00 red by next month.02br 02br 00These leaves 01b01font00might02font00 have turned02b00 red by next month.02br 02br 00These leaves 01b01font00should 02font00have turned02b00 red by next month.02br 02br 00These leaves01b00 01font00would02font00 have turned02b00 red by next month.02br 02br 00These leaves 01b01font00must 02font00have turned02b00 red by next month.02br 02br 00I think these modals aren't functioned as "future perfect". They are 01b00deducing the possiblity of the future02b00. I'm not sure if I'm right in this concept.02br 02br 00I hope you could help me solve my doubt. Thank you very much! 0-
Top answer
02br 00Sorry, they don't work. 0-
— Mister Micawber
02br 00Sorry, they don't work.
0-
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0 .02br 00Sorry, they don't work. Use these:02br 02br 00These leaves 01b01font00could02font00 turn02b00 red by next month.02br 02br 00These leaves01b00 01font00may02font00 turn02b00 red by next month.02br