Question

the train left the station at 7 o'clock (Simple Future)​

Answer 1

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Simple future tense:

subject+will/shall+v1+object

The train left the station at 7 o'clock.

- The train will left the station at 7 o'clock.

${\underline{❥ʜᴏᴘᴇ \: ɪᴛ \: ʜᴇʟᴘs \: ʏᴏᴜ.....}}$

Answer 2

the train will be left the station at 7 o' clock

Hope it's helps.....↥↥