102.A＋动词＋形容词或副词的比较级＋B

102.A＋动词＋形容词或副词的比较级＋B
A 比 B更…
My hair is longer than Mary's.
Many students think physics is more difficult than English.
注意比较对象要一致
Who ／which＋动词＋比较级，Aor B?
表示A和B哪一个更....
Who is stronger， Tom or Tony？
Which is cheaper，the dress or the sweater?