1. Spelling error: Spelling error is a common problem in English expression. For example, spell "thank you" as "thank u" or "thx"; Spell "hospital" as "hospital"; Spelling "beautiful" into "beautiful" and other mistakes.
2. Grammatical error: Grammatical error refers to the violation of English grammatical rules in sentence structure, tense and subject-predicate consistency. For example, the word "go" in He Shangxue is misused as "go"; When using tenses, use "yesterday" with verbs in the present perfect tense, such as "yesterday I have eaten dinner" (I had dinner yesterday).
3. Sentence structure confusion: Sentence structure confusion refers to unclear or partially missing sentence organization. For example, there is no subject and predicate, such as "running in the park." (running in the park); Sentences are too long or too short, lacking proper punctuation and conjunctions, which leads to confusion in expression.
4. nonstandard use of words: nonstandard use of words refers to the use of incorrect or inappropriate words and phrases. For example, "there" is mistaken for "theirs"; Misuse of homophones, such as "two" and "to"; Use informal or online terms, such as "LOL" (laughter) and "OMG" (God).
5. Ambiguity: Ambiguity means that the meaning of a sentence or phrase is unclear or contrary to the original intention. For example, use ambiguous phrases, such as "break a leg" (good luck); The wrong words are misleading, such as replacing "medicine" with "poison".
6. Lack of logical coherence: When expressing ideas or opinions, lack of logical coherence is an unhealthy English expression. For example, jumping from one topic to another in a paragraph or a conversation is hard to understand.
These are common examples of unhealthy English, and these mistakes may lead to unclear information transmission, difficulty in understanding or misunderstanding. Using correct grammar, spelling and words, and maintaining logical coherence are essential for healthy English expression.