half

• 指某物是整体的两个相等部分之一；也用于表示不完整或部分的状态。

Describing something that is one of two equal parts of a whole; also used to indicate incomplete or partial states.

1. A1formal

   Constituting or being one of two equal parts into which something is divisible.

   一半

   • We walked half the distance before resting.
   • She ate half an apple.
   • Only half the students finished the assignment.

   反义词entirefullwhole

2. Partial or incompleteB1formal

   Lacking completeness; not whole or full.

   部分的或不完整的

   • He gave me half an answer.
   • It's only half the story.
   • She has half the energy she used to have.

   同义词halfwayimperfectincompletelimitedmoderatepartpartial

   反义词completeentirefullwhole

3. Half as muchA2formal

   A quantity that is half of another specified quantity.

   一半

   • She ordered half a dozen eggs.
   • They saved half the amount required.
   • He drank half a glass of water.

• 副词，表示“一半地”或“部分地”，常用于非正式语境，修饰形容词或其他副词，如“半满”或“半睡半醒”。

An adverb meaning "to the extent of half" or "partially." It is used in informal contexts, particularly in American English, to modify adjectives and other adverbs, as in "half full" or "half asleep."

1. In part or to some extentA2formal

   Not fully or completely; to a certain degree.

   部分地

   • She half agreed with his argument.
   • The window was left half open.
   • He was half asleep during the lecture.

   同义词halfwayincompletelypartiallypartlysomewhat

   反义词completelyentirelyfullyquitetotallywholly

2. Equally dividedA1formal

   Divided into two equal parts or shares.

   平分

   • The cake was cut half for each of them.
   • He split the money half with his brother.
   • She divided the chores half between the children.

3. Almost or partlyB1informal

   To a degree that is almost but not fully complete.

   一半地或部分地

   • He half expected her to call.
   • She half smiled at the joke.
   • I'm half convinced by his explanation.

   同义词fairlymoderatelypartiallypartlyratherslightlysomewhat

   反义词completelyentirelyfullytotallywholly

• 指一个整体分成两个相等部分中的一部分，即二分之一；也可表示一半的数量或程度。

A determiner used to refer to one of two equal parts of a whole. It can be used with singular countable nouns (usually preceded by 'a' or 'the'), plural countable nouns, and uncountable nouns.

1. One of two equal partsA2formal

   Used to indicate fifty percent of a whole amount, quantity, or object. It divides something into two equal portions.

   两个相等部分之一

   • Half the class was absent.
   • I ate half the cake.
   • Half my friends live abroad.

2. Approximate proportionB1informal

   Used to describe a significant but not necessarily exact portion of a group or amount, often implying a large share.

   大约一半

   • Half the time I don't understand him.
   • It took half an hour to get there.
   • Half the battle is showing up.

• 名词，指某物被分成两个相等部分中的一部分，或占整体一半的部分。

A noun referring to one of two equal parts into which something can be divided, or a portion that is half of a whole.

不规则复数

1. One of two equal partsA1formal

   Either of the two equal parts into which something is divided.

   一半

   • He ate half of the pizza himself.
   • She divided the cake into two halves.
   • Half of the class passed the exam.

   同义词fifty percentmoietyone-half

2. The middle pointA1formal

   A time halfway through a period or a point halfway along a distance.

   一半

   • It's half past eight in the morning.
   • We are at the half-mile mark in the race.
   • They arrived at halftime during the football game.

   同义词centermiddlemidpoint

3. Part of somethingA1informal

   A portion or share of something that is not necessarily exactly equal.

   一半

   • I'll be there in a half hour.
   • She gave him half of her sandwich.
   • They spent half the day cleaning the house.

   同义词fractionpartportionsectionsegmentshare