2. In the coordinate structure, and is used in affirmative sentences, while or is usually used in negative sentences, which means "and, and".
3.or is used for multiple-choice questions, meaning "or, or". And cannot be used in interrogative sentences.
4. Fixed and different. In the sentence pattern of "imperative sentence+or+declarative sentence", it either means the opposite hypothesis under the imperative sentence condition or means "otherwise, otherwise". That ... either means ... or ... pay attention to the principle of adjacency between the subject and predicate of the predicate verb.
Knowledge expansion
Conjunctions are divided into coordinate conjunctions and subordinate conjunctions. English connectives are words that connect English words, such as also, and so on. There are about 486,000 words in English, but there are only about 70 conjunctions, which always appear very frequently in various articles, dialogues, emails and other practical English communication.
English conjunctions connect related sentences like glue, which is called "glue words" by Long Feihu, an international psychologist, linguist and educator.