1. You are to finish this project by tomorrow.

Question

2. You must finish this project by tomorrow.

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Are both the same in meaning?
Do you use #1 frequently in everyday speech?
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3. He is to go to London tomorrow.
4. He is going to go to London tomorrow.
5. He is due to go to London tomorrow.
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Are the three all the same? Which expression is commonly used? Do you use #3 frequently in colloquial expressions?

Answer 1

1and 2 mean the same, yes, and 1 is more commonly used.

3, 4, and 5 mean about the same thing, but they're wordy. I'd say, "He is going to London tomorrow."