گرامر حال ساده و گذشته ساده

Benedict Allen was born in England in 1960. His father was a pilot, and Benedict dreamed of traveling around the world like his dad. His dram came true. Benedict become an explorer. But he doesn't travel the world in an airplane. He finds a place he wants to explore, and then he lives with the local people. He learns important skills from them.

سلام. چرا تو متن، بعد  از جمله { Benedict become an explorer} زمان جملات به حال ساده تغییر می  کنه؟

مگه در مورد گذشته حرف نمیزنه؟

یعنی دو جمله زیر درسته برای متن؟

He doesn't travel the world in an airplane. 

 جمله متن☝️

He didn't travel the world in an airplane.

جمله گذشته☝️