1, act refers to a short-lived, single, personal and concrete behavior, emphasizing the consequences.

For example, helping the blind to cross the road is a kind act.

Helping the blind to cross the street is a charitable act.

2. Action refers to actions or behaviors with long duration and complicated process, and sometimes refers to abstract actions, emphasizing the process.

There is no denying that your behavior has affected her normal life.

There is no denying that your behavior has affected her normal life.

Second, the meaning of different emphasis.

1, act generally refers to specific, transient or individual behavior, emphasizing the completion of behavior and its effect.

2. Actions use common words, and the focus is on the process of actions.

Third, the etymology is different

1, action

/kloc-words that entered English in the late 0/4th century came directly from acte, which means old French; Agere, from Latin, means to do and drive.

2. Action

/kloc-words that entered English in the middle of the 0/4th century came directly from ancient French actions; ; Actionem originally came from Latin, which means to fight.

Fourth, the specific usage is different.

1, action

(noun)

1) the basic meaning of act is "behavior, action", which refers to a specific "behavior" in a short time. This kind of behavior can be completed by individuals, groups or impersonal entities, and it is single and complete without being limited by motivation, nature or result. Acting? It can also be used to express "action", in contrast to thought or language.

2) Bills can be interpreted as "bills", "decrees" and "regulations" passed by Parliament. It can also refer to "a scene" of a play, and the first letters of these two definitions are usually capitalized. Extension can refer to "a performance" or "performer". In spoken English, it can be interpreted as "pretending".

3)act is a countable noun, which is often used in singular form.

2. Action

(noun)

1) The basic meaning of action is "action, activity", which refers to the way or process of an action, especially the action that develops or continues to prevent a bad situation, which is wrong or unusual behavior for others, exciting or important activity, which often takes a long time, including different steps or many actions, and its subject is often things, not people.

Action can also refer to the ongoing "behavior", the "plot" of a story, drama or movie, the "function" of drugs or chemicals, etc. Effect ","fight; Fight "and so on.

2) When 2)action is used as a countable noun, the plural form is often used. When the plural form of action refers to people's "behavior", it often corresponds to words.

3) When 3)action represents a major event in a drama or book, it is often used in the singular form, and the definite article the is added before it.