( )内の語を使ってThey ( ) on the phone for an hour. (talk)
答have been talking
have been + talking
( )内の語を使ってKen ( ) for the bus for thirty minutes. (wait)
答has been waiting
has been + waiting
( )内の語を使ってWe ( ) the song since last week. (practice)
答have been practicing
have been + practicing
( )内の語を使ってMy father ( ) the car for an hour. (wash)
答has been washing
has been + washing
現在完了進行形にYuki is reading that book. (since yesterday を加えて)
答Yuki has been reading that book since yesterday.
has been + reading
現在完了進行形にThe children are swimming in the pool. (for two hours を加えて)
答The children have been swimming in the pool for two hours.
have been + swimming
現在完了進行形にI am writing this letter. (since ten o'clock を加えて)
答I have been writing this letter since ten o'clock.
have been + writing
否定文にHe has been watching TV for three hours.
答He has not been watching TV for three hours.
has のうしろに not
否定文にMy sister has been cleaning her room since noon.
答My sister has not been cleaning her room since noon.
has のうしろに not
疑問文に→Yesで答えるThey have been walking in the forest for two hours.
答Have they been walking in the forest for two hours? ― Yes, they have.
Have を主語の前に出す