Question

1. Hope your wishes all come true.

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Is "I" omitted before "Hope" in this sentence? Why is this sentence used without the subject "I"? In which situation is this sentence used?

Answer 1

Eliminating the "I" is very informal, bordering on slang usage, certainly colloquial. This would probably not be done in spoken language, but in a terse/quick inscription in a greeting card, for example, below the printed verse, with the signature. The signature indicates who is hoping instead of writing "I hope.."