The reflexive pronouns are:
反身代词有:

We use a reflexive pronoun:
我们用反身代词:

• as a direct object when the object is the same as the subject of the verb:
当动词的主语与宾语一致,反身代词作直接宾语:

I am teaching myself to play the piano.

Be careful with that knife. You might cut yourself.

We can use a reflexive pronoun as direct object with most transitive verbs, but these are the most common:
我们也可以将反身代词作为直接宾语,与及物动词连用,以下是常见的及物动词:

Some verbs change their meaning slightly when they have a reflexive pronoun as direct object:
反身代词作为直接宾语时,有些动词的意义改变:

Would you like to help yourself to another drink?

= Would you like to take another drink?

I wish the children would behave themselves.

 = I wish the children would behave well.

He found himself lying by the side of the road.

= He was surprised when he realised that he was at the side of the road.

I saw myself as a famous actor.

= I imagined that I was a famous actor.

She applied herself to the job of mending the lights.

= She worked very hard to mend the lights.

He busied himself in the kitchen.

 = He worked busily in the kitchen.

I had to content myself with a few Euros.

= I had to be satisfied with a few Euros.

We do not use a reflexive pronoun after verbs which describe things people usually do for themselves, such as wash, shave, dress:
我们不在动词后直接接反身代词来描述人们给自己的动作,如洗澡、刮胡子、穿衣服:

He washed [himself] in cold water.

He always shaved [himself] before going out in the evening.

Michael dressed [himself] and got ready for the party.

We only use reflexives with these verbs for emphasis:
我们只在强调时将反身代词放在动词后面:

He dressed himself in spite of his injuries.

She’s old enough to wash herself.

• as indirect object when the indirect object is the same as the subject of the verb:
当间接宾语的动词与主语相同时,反身代词作为间接宾语:

Would you like to pour yourself a drink.

We’ve brought ourselves something to eat.

But we use personal pronouns, not reflexives, after prepositions of place...
但是在介词后,我们用人称代词而非反身代词。

He had a suitcase beside him.

and after with when it means "accompanied by":

She had a few friends with her.

We use a reflexive with the preposition by...
在下列情况中我们会在介词后使用反身代词。

• when we want to show that someone did something alone and/or without any help:
当我们想要表现出某人独立完成某事时:

He lived by himself in an enormous house.

She walked home by herself.

The children got dressed by themselves.

I prepared the whole meal by myself.

• to emphasise the person or thing we are referring to:
强调我们所指代的某人或某物:

Kendal itself is quite a small town.

especially if we are talking about someone very famous:
特别是我们在谈论某位名人:

Sir Paul McCartney himself sang the final song.

We often put the reflexive pronoun at the end of the clause when we are using it for emphasis:
我们会在句子末尾使用反身代词以表强调:

I baked the bread myself.

She mended the car herself