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TOEFL BNC: 2923 COCA: 2666

B2 to act in a particular way as a direct result of something else反应;作出回应

She slapped him and called him names, but he didn't react.她打他并辱骂他,但他不予回应。
The judge reacted angrily to the suggestion that it hadn't been a fair trial.有人说审判不公正,法官对此很愤怒。
Many people react (badly) to (= are made ill by) penicillin.很多人对青霉素(严重)过敏。

chemistry to change in a physical or chemical way when put with another substance产生(化学)反应

Potassium reacts with water.钾和水会发生化学反应。

More examples

It's difficult to gauge how they'll react.

She slapped him and called him names, but he didn't react.

The prime minister reacted angrily to claims that he had lied to the House of Commons.

She reacted surprisingly calmly to the news of his death.

The government was very slow to react to the problem.

Phrasal verb(s)

TOEFL BNC: 2923 COCA: 2666
react

verb

ADVERB | VERB + REACT | PREPOSITION ADVERBstrongly反應強烈favourably/favorably, positively, well有利地/積極地/很好地回應people who react positively to change對變化作積極反應的人adversely, badly, negatively, poorly, unfavourably/unfavorably負面反應;不良反應;消極地回應;不利地回應aggressively, angrily, defensively, sharply, violently挑釁地/憤怒地/防禦性地/尖銳地/激烈地回應emotionally情緒性地回應cautiously, coolly謹慎地/沉着地回應calmly, rationally冷靜地/理智地回應appropriately恰當地回應strangely奇怪地回應immediately, instantly立即/即刻回應quickly, rapidly, swiftly迅速反應The police must be able to react swiftly in an emergency.警方在面對緊急情況時必須能迅速作出反應。slowly反應遲緩differently反應不同accordingly相應地回應His insensitive remarks hurt and she reacted accordingly.他冷漠的話語傷害了她,她也冷漠以對。automatically, instinctively, spontaneously自動地/本能地/自然地反應physically生理上反應chemically發生化學反應Silicon reacts chemically like carbon.矽與碳的化學反應相似。VERB + REACTtend to傾向於回應be slow to反應遲緩The industry has been slow to react to these breakthroughs in technology.該行業對技術上的這些突破反應遲緩。not know how to不知道如何回應He did not know how to react to her sudden mood swings.他不知道如何應對她的情緒突變。PREPOSITIONagainst反對Many young people react against traditional values.許多年輕人反對傳統的價值觀。by以⋯回應The government reacted by increasing taxation.政府的反應是增加稅收。to對⋯反應The committee reacted positively to the proposals.委員會對這些提議作出了積極回應。with用⋯回應Her family reacted with horror when she told them.她告訴她的家人後他們驚駭不已。
TOEFL BNC: 2923 COCA: 2666
react verb
respond
TOEFL BNC: 2923 COCA: 2666
react
To react to something: react, stand up, respond...
Chemical reactions and processes: action, adsorb, aerate...
Allergies and allergy: allergen, allergic, allergy...

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