Discuss and learn French: French vocabulary, French grammar, French culture etc.
Je dois dire que cette nuit j'ai rêvé que j'étais retraité.
Idioms don't translate exactly from one language to another.
Those sentences you have shown us are correct.
Try to get a feel of what they are saying.
"Dernier été'" is not good French ; it should be "l' été' dernier" or "le dernier été'" (with different meanings -"last summer" or "the last summer")