( )内の語を使ってHe ( ) TV for three hours. (watch)
答has been watching
has been + watching
( )内の語を使ってMy sister ( ) her room since noon. (clean)
答has been cleaning
has been + cleaning
( )内の語を使ってThey ( ) in the forest for two hours. (walk)
答have been walking
have been + walking
( )内の語を使ってEmi ( ) music since this morning. (listen to)
答has been listening to
has been + listening to
現在完了進行形にWe are looking for the key. (for an hour を加えて)
答We have been looking for the key for an hour.
have been + looking
現在完了進行形にTom is cooking dinner. (for two hours を加えて)
答Tom has been cooking dinner for two hours.
has been + cooking
現在完了進行形にI am running in the park. (for two hours を加えて)
答I have been running in the park for two hours.
have been + running
否定文にHe has been playing the guitar since this morning.
答He has not been playing the guitar since this morning.
has のうしろに not
否定文にShe has been studying in her room for three hours.
答She has not been studying in her room for three hours.
has のうしろに not
疑問文に→Yesで答えるThey have been talking on the phone for an hour.
答Have they been talking on the phone for an hour? ― Yes, they have.
Have を主語の前に出す