`7.` They have been playing tennis for 1 year.

Giải thích: 

$\text{S + have/has + P2/been V-ing + for/since... }$

`8.` My brother has been playing the guitar since 2019.

Giải thích:

$\text{S + have/has + P2/been V-ing + for/since... }$

`9.` My parents have been working on this farm for along time.

Giải thích: 

$\text{S + have/has + P2/been V-ing + for/since... }$

`10.` I have been sudying Chinese for 1 year.

Giải thích:

$\text{S + have/has + P2/been V-ing + for/since... }$

#chucbanhoctot

$#thaonguyeneakar$

`\text{Answer :}`

7. They have played tennis for a year.

8. My brother has learnt/learned play the guitar since 2019.

9. My parents have worked on this farm for a long time.

10. I have studied Chinese for a year.

________________________________________________________________

`\text{S + started/began + Ving/ to V + at/in/on + mốc thời gian}`

`\text{= S + has/have + VpII + since + mốc thời gian}`

`\text{S + started/began + Ving/ to V + ktg + ago}`

`\text{= S + has/have + VpII + for + ktg}`