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Grammar Points
于…召开…— Time preposition with ‘于’HSK 4
Sentence structure using the preposition “于” to mark the time when an action occurs, often followed by a verb like “召开”. It is common in formal announcements. Learners can replace the time phrase after “于” to describe when an event happens.
“经…审议通过” is a formal passive structure meaning “after … reviewed and approved”. The noun phrase after “经” indicates who did the review, and “审议通过” is the action that followed. Useful in business or official contexts.
"经董事会提名委员会审议通过，公司董事会决定解聘李岩的副总经理职务。"
自…之日起…生效— Effective from a dateHSK 5
“自…之日起” introduces the starting point of an action or status and is often followed by “生效”, “实行”, etc. It literally means “from the day…” and signals the exact time something becomes valid.
"本次解聘事项自董事会审议通过之日起生效，李岩被解聘后将不再担任公司任何职务。"
尚处于…阶段— Still in a stageHSK 5
“尚处于…阶段” indicates that something is still in a certain phase and not yet mature. “尚” adds a formal touch meaning “still”, and “处于…阶段” describes the current status.
"公司碳排放治理业务、精密机床制造及销售业务尚处于培育阶段，占比低。"
未…— Negation with ‘未’HSK 3
“未” is a formal negation meaning “not yet” or “did not”. It usually precedes verbs or verbal phrases to describe something that has not happened or does not exist. It is common in written announcements and reports.