【课文】
we have an old musical instrument，It's called a clavichord, it was made in Germany in 1681.Our clacichord was kept in the living room, it has belonged to our family for a long time.the instrument was bought by my grandfather many years ago,recently it was damaged by a visitor, she tried to play jazz on it. she struck the keys too hard and two of the strings was broken. my father was shocked. Now we are not allowed to touch it. it is being repaired by a friend of my father's
【key Word】
不能改变成被动态的动词
have：表示拥有
belong to：属于
fit：适合
cost：花费
the shirt cost me 99￥
lack：缺少
被动句结构：
be+done
it is called clavichord == we called it a clavichord