Adverbs of manner are usually formed from adjectives by adding –ly:
方式副词通常是其形容词后直接加-ly形成的:

bad > badly; quiet > quietly; recent > recently; sudden > suddenly

but there are sometimes changes in spelling:
但有的时候在拼写上会有一些改变:

easy > easily; gentle > gently

If an adjective ends in –ly we use the phrase in a …. way to express manner:
若一个形容词以-ly结尾,我们用短语in a ... way来表示“用……方式”:

Silly > He behaved in a silly way.

Friendly > She spoke in a friendly way.

A few adverbs of manner have the same form as the adjective:
一些方式副词与形容词的形式一样:

They all worked hard.

She usually arrives late.

I hate driving fast.

Note: hardly and lately have different meanings:
注意:hardly 和 lately 有不同的含义:

He could hardly walk = It was difficult for him to walk.

I haven’t seen John lately = I haven’t seen John recently.

We often use phrases with like as adverbials of manner:
我们经常用like短语作为方式状语:

She slept like a baby.

He ran like a rabbit.

Adverbs of manner and link verbs

We very often use adverbials with like after link verbs:
我们经常在系动词后,用like短语作状语:

Her hands felt like ice.

It smells like fresh bread.

But we do not use other adverbials of manner after link verbs. We use adjectives instead:
但是我们不用其他方式状语与系动词连用,而以形容词代替:

They looked happily happy.

That bread smells deliciously delicious.