1. Please come to see me in the afternoon, when I will be free.
2. Please come to see me in the afternoon, and I will be free then.
3. Please come to see me in the afternoon, for I will be free then.
4. Please come to see me in the afternoon, and then I will be free.
5. Please come to see me in the afternoon, for then I will be free.
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Which ones are similar to Sentence 1?
Can we use all the sentences?
All of them (2-5) mean about the same as 1.
2 is a bit awkward, but still useful. All the sentences are grammatically correct.
Sentences 2, 4, and 5 are the most similar to Sentence 1. These sentences convey the same message and intention, which is to invite someone to visit in the afternoon when the speaker will be available.
Sentence 3 slightly differs in structure by using "for" instead of "when" or "then." However, it still conveys the same meaning and can be used interchangeably with the other sentences.
In conclusion, all of the given sentences can be used to invite someone to visit in the afternoon when the speaker will be free.