I have made up the sentences below.
(1) I am not sure if Jack is older than I. He might have graduated from primary school later than I.
(2) I am not sure if Jack is older than I. He might have graduated from primary school after I.
I don't know which one is correct. Please help me. Thanks.
ansonguy (1) I am not sure if Jack is older than I. He might have graduated from primary school later than I. Very formal.
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ansonguy(1) I am not sure if Jack is older than I. He might have graduated from primary school later than I.
Very formal. In my opinion, too formal. I do not recommend this format.
(1b) I am not sure if Jack is older than I am. He might have graduated from primary school later than I did.
More commonly used. A