Will is used to express the simple future in the second or third person, or determination, obligation, or fate in the first person. For instance:
You will get a tan if you go to the beach. I will get a tan tomorrow, no matter what.
Shall is used in exactly the reverse manner.
I believe I shall have lunch. He shall have lunch, even if I must cram it down his throat with my own hands.
Unless you mean actual usage as opposed to "correct" usage, in which case the only difference is that shall is affected and formal and will isn't, at least in USia. The British are said to still use these correctly, although I believe that is not strictly the case anymore. This is partly due to the contraction "'ll", which can be used to stand for either and has caused a reverse etymology that allows "will" to be used for either.
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timeasmymeasure
no subject
Date: 2005-06-01 03:58 am (UTC)You will get a tan if you go to the beach.
I will get a tan tomorrow, no matter what.
Shall is used in exactly the reverse manner.
I believe I shall have lunch.
He shall have lunch, even if I must cram it down his throat with my own hands.
Unless you mean actual usage as opposed to "correct" usage, in which case the only difference is that shall is affected and formal and will isn't, at least in USia. The British are said to still use these correctly, although I believe that is not strictly the case anymore. This is partly due to the contraction "'ll", which can be used to stand for either and has caused a reverse etymology that allows "will" to be used for either.