容易混淆词的特别记忆
（1）有些字可当形容词又可当副词，例如：early；past；half；long；straight；fast；hard；quick；deep；slow； pretty；awful；wrong；right；high；late；hourly；early；weekly；etc.
We had an early breakfast.（形容词）
We went by a fast train.（形容词）
We had breakfast early.（副词）
Don't speak so fast.（副词）
（2）有些形容词变为副词，可在字尾加ly，也可以不加，不过在字义上不同。
（A）easy “安适地”；easily “容易地”：
Stand easy!
He's not easily satisfied.
（B）clear （ = completely “完全地“；clearly“显然地”）
The bullet went clear through the door.
The thieves got clearly away.
（C）high “高”；highly “很、非”；
The birds are flying high.
He was highly praised for his work.
（D）slow和slowly当副词时同义，但slow比slowly语气强。
I told the driver to go slow（er）.
Drive slowly round these bends in the road.
（E）hard“辛苦地“；hardly“几乎不”
He works hard.（= He is a hard worker.）
He hardly does anything nowadays.（= He does very little nowadays.）
（F）just“刚才；仅”；justly“公正地”
I've just seen him.
He was justly punished.
（G）late“迟”；lately（= recently）“最近地”
He went to bed late.
I haven't seen Mr. Green lately.
（H）pretty（= fairly, moderately）“十分，颇”；
prettily（= in a pretty way, attractively）“漂亮地”
The situation seems pretty hopeless.
She was prettily dressed.