You must give the pen to Tom this afternoon.改为You must( )( )the pen this afternoon.Jack could speak English at the age of nine.改为Jack( )( )to speak English at the age of nine.He heard from me yesterday.改为He( )a letter( )me yesterday.Zhang Hua is 18 years old.改为Zhang Hua is( )( )boy.

give TOM
was able
got from
a 18-year-old

1.give Tom give sb sth= give sth to sb
2.was able can=be able to
3.got/received .....from hear from sb=get/receive a letter from sb
4. an 18-year-old an-18-year-old (一个18岁的...... , 需放在名词前,作定语）

You must(give )( Tom)the pen this afternoon.
Jack( was )( able )to speak English at the age of nine
He( received)a letter(from )me yesterday
Zhang Hua is( a )(18-year )boy.

You must give the pen to Tom this afternoon.改为You must( give )( Tom)the pen this afternoon
Jack could speak English at the age of nine.改为Jack( was )(able )to speak English at the age of nine.
He heard from me yesterday.改为He( got /received)a letter(from )me yesterday.
Zhang Hua is 18 years old.改为Zhang Hua is(an )( 18-year-old )boy.