New words：

`

详细词源拆解：

词汇家族

必记高频搭配

关键使用提醒

New words：

committee n. 委员会；专项工作小组（由多人组成，负责讨论、决策事务）

详细词源拆解：

词根 commit（托付、委派）+ 名词后缀 -ee
本义 “被委派处理专项事务的一群人”；
指为完成特定工作组建的委员会、专项小组。

必记高频搭配

school committee 校务委员会

The school committee sets new rules for students.

a committee of … 由…… 组成的委员会

This is a committee of five teachers and four students.

on the committee 在委员会任职；身为委员

My head teacher is on the student activity committee.

set up a committee 成立委员会

We set up a committee to protect school environment.

New words：

commitment /kəˈmɪtmənt/
n. 名词

1. 投入；奉献；专注（为梦想、工作、事业付出心力）
2. 承诺；应承担的责任、义务

必记高频搭配

a sense of commitment 责任感；使命感

Every student should have a sense of commitment to study.

make a commitment to (doing) sth 承诺做某事

He made a commitment to keep exercising every morning.

full commitment 全身心投入

Full commitment helps you pass the important exam.

keep one’s commitment 恪守承诺

A trustworthy person always keeps his commitments.

关键使用提醒

1. 搭配固定介词：

   commitment to sth /doing sth，to 是介词

2. 可数 / 不可数区分

   ① 表抽象 “投入、奉献”：不可数
   ② 表一件件 “承诺、待办事务”：可数，复数 commitments

3. 写作高分短语

   a sense of commitment（责任感），成长、坚持类作文万能句式

4. 词义区分技巧

   长期付出、坚守热爱 → commitment；随口保证 → promise；身份分内事 → duty。

New words：

committed /kəˈmɪtɪd/

v. commit的过去式和过去分词

adj. 尽心尽力的；专注投入的；忠诚的；坚定拥护的

uncommitted /ˌʌnkəˈmɪtɪd/

adj. 未作承诺的；态度中立的；不愿投入的；不致力于某事的

必记高频搭配

be committed to (doing) sth 致力于；坚定投入某事

We are committed to protecting wild animals.
He is committed to environmental protection.

a committed person 有责任心、专注认真的人

My deskmate is a committed learner every day.

忠诚的；坚定的

My goal is to try and achieve a very deep, committed relationship.

不愿投身于某事

The uncommitted boy never finishes his tasks on time.

remain uncommitted 保持中立、不表态

Most listeners remain uncommitted in the discussion.

New words：

commit /kəˈmɪt/

v. 动词

犯（罪、错误、过错）
投入；致力于；献身于
承诺；保证
移交；送交（较少考）

详细词源拆解：

前缀 com-（完全、共同）+ mit（派送、交付）；
本义交付出去，引申三层核心含义：
①交付自身（投入、献身）、②交付过错（犯下罪行 / 错误）、③交付承诺（保证、承诺）。

词汇家族

commit (v. 犯错；投入；承诺)
→ committed (adj. 尽心尽力的；忠诚的)
→ uncommitted (adj. 未作承诺的)
→ commitment (n. 投入；承诺；责任感)
→ committee (n. 委员会)

必记高频搭配

commit a mistake /error 犯错

Do not commit the same mistake again and again.

commit a crime 犯罪

Anyone who commits a crime will receive punishment.

commit oneself to (doing) sth 致力于 / 投身于某事

The teacher commits all her time to her students.
He commits himself to studying English every day.

commit to doing sth 承诺做某事

We commit to protecting the environment together.

关键使用提醒

1. 必考固定结构：commit oneself to doing sth，to 是介词，后面接动名词

   错误：commit oneself to study
   正确：commit oneself to studying
   He commits himself to helping others.
   他致力于帮助他人。

2. 变形拼写易错：

   双写 t → committed /committing，不可写成 commited

3. 词义场景区分

   搭配 mistake /crime → 犯错、犯罪；
   搭配 oneself → 投身、奉献；
   搭配 to do → 承诺。

4. 作文高级替换：

   commit oneself to 可替换普通短语 work hard at，提升书面文采。