1, Lan has studied Japanese for two months

2, He has worked in that factory since September 

3, We have checked the washing machine for three hours

4, They have taught math since 2010 

5, We haven't gone to this museum for 5 years 

6, We haven't seen her since Christmas Day 

( cần dịch không ạ ? )

$1.$ Lan has studied Japanese for two months.

$2.$ He has worked in that factory since September.

$3.$  We have checked the washinh machine for three hours.

$4.$ They have taught Math since 2010.

$*$ Công thức : S + began/started + V_ing/to + V_nguyên thể + khoảng thời gian + ago/in + mốc thời gian.

$=$ S + have/has + V3 + for + khoảng thời gian/since + mốc thời gian.

$5.$ We haven't gone to this museum for 5 years.

$6.$ We haven't seen her since Christmas Day.

$*$ Công thức : The last time + S + V(quá khứ) + was + khoảng thời gian + ago/in + mốc thời gian.

$=$ S + have/has + not + V3 + for + khoảng thời gian/since + mốc thời gian.

$#Mei UvU$