1.wrap的基本意思是“包”“卷”,指用纸、布或其他薄片把某物裹起来。引申可表示“缠绕”“覆盖”“遮蔽”或“使沉浸于”“使陷于”“对…有极大兴趣”等。
2.wrap既可用作及物动词,也可用作不及物动词。用作及物动词时,接简单宾语。
3.wrap的过去式和过去分词均为wrapped。

wrap around〔round〕(v.+prep.)
用…包裹,裹身 fold so as to surround sth/sb
▲wrap sth around〔round〕 sb/sth
You'd better wrap a clean cloth around your arm till the wound closes.你最好用干净布把臂上的伤口裹严。
You can wrap the skirt around your waist.你可以把裙子围在腰间。
She held his wrist and wrapped the soft handkerchief round it.她擎起他的手腕用柔软的手帕把它缠起来。
Wrap your arms around me.用你的双手抱住我。

wrap in(v.+prep.)
把…包在…里; 遮蔽; 使陷于 cover or roll up in
▲wrap sb/oneself/sth in sth
Tom wrapped a book in a newspaper.汤姆把书包在报纸里。
He wrapped himself in a blanket.他把毯子裹上身上。
◇ 用于be ～ed 结构
The affair is wrapped in mystery.这件事在隐秘之中。
He was wrapped in his thought.他陷入了沉思。
She was wrapped in the novel that she even forgot to eat.她看小说看入了迷,饭都忘吃了。
All the people in the hotels were wrapped in deep slumber.住在各旅馆里的人都已进入梦乡。

wrap up(v.+adv.)
1.穿暖 wear warm clothes
▲wrap up
Make sure you wrap up in this cold wind.冷风中,你一定要穿暖。
2.包裹,包扎 cover completely
▲wrap sb/sth⇔up
He wrapped up the parcel.他把邮包扎好。
They wrapped the child up.他们把小孩裹好。
3.完成; 签订完协议 complete (a task or an agreement)
▲wrap sth⇔up
They wrapped up an agreement on Friday.他们于周五签完协议。
◇ 用于be ～ed 结构
The whole thing has been wrapped up.整个事情已成定局。
4.注意力完全集中于 have one's attention deeply occupied by sb/sth
▲wrap up oneself in sb/sth
◇ 常用于be ～ed 结构
They're completely wrapped up in their work.他们把全部精力都用在工作上了。
She is completely wrapped up in that fellow.她被那小伙子完全迷住了。
They are wrapped up in their children.他们为孩子而费心。

用作不及物动词
▲S+～(+A)
The edges should wrap.边必须卷起来。
In cold weather you should wrap well.在寒冷的天气你应该穿好。
用作及物动词
▲S+～+n./pron.
Buy paper to wrap the gift.买纸包扎礼品。
You'd better wrap it with a piece of clean cloth.你最好用一块干净的布把它包起来。
Fogs wrapped the hills.浓雾笼罩着群山。

wrap, envelop
这组词的共同意思是“包”“裹”。其区别在于:
1.envelop是及物动词; 而wrap可以作及物动词,也可作不及物动词。
2.envelop比wrap正式,常用在书面语中。
3.envelop有“包围”之意,而wrap没有。

［派生词］ wrapper n.包装纸; 封皮,封套