Resposta :
⇒⇒ Present perfect
⇒⇒ Present perfect continuous
a) Julia has been practicing her flying since she became a pilot. (to practice)
b) Some people don't believe that men have walked on the moon. (to walk)
c) Have you watched that documentary about life other planets that started last week? (to watch)
d) My brother and I have been doing this research paper about Nasa for days and we didn't finish it yet. (to do)
e) I haven't seen an alien spaceship yet. And you? (not; to see)
f) Some people believe that aliens have been living with us for millions of years. ( to live)
g) They haven't sent any astronauts to walk on Mars. (not;to send)
Questão 4. Use o " present perfect" ou o " present perfect continuous "e um verbo de sua escolha para completar as frases.
a) I have been studying Italian since I was a kid.
b) I have walked at the park for 2 years, but I don't do it anymore.
⇒⇒ Present Perfect >>> expressa ações relativas ao presente, ou seja, as ações dos verbos ainda estão acontecendo ou terminaram recentemente.
O present perfect também pode:
a. indicar uma situação/ação que começou no passado e continua no presente..
I have studied German since 2017. - Eu estudo alemão desde 2017.
b. indicar uma situação que aconteceu durante um período e que ainda não terminou.
Helen has been to the movies twice this week.
c. indicar uma ação terminada em um passado recente, confirmada pelo uso da palavra ''just''
David has just arrived from New York.
→→ Present perfect continuous >> tempo verbal que descreve uma ação que vem acontecendo recentemente ou uma ação que começou no passado e ainda está acontecendo.
I have been playing video game since I got back home.
John has been working at that company for ten years.
Learn more
→→ brainly.com.br/tarefa/25568607
→→ brainly.com.br/tarefa/26002018
