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in addition; moreover; besides
天气炎热，加之湿度很高，让人感到更加不适。
The weather is hot, and in addition, the humidity is high, making it even more uncomfortable.
她不仅学习成绩优秀，加之积极参加社团活动，深受老师喜爱。
She not only has excellent grades, but also actively participates in club activities, which makes her beloved by teachers.
Used to add another reason or point, often in formal or written Chinese.
'加之' should not be used to simply list unrelated points. It is best suited for adding a logically connected reason or condition. For example, '他很聪明，加之努力' (He is smart and, moreover, hardworking) is correct, but '他很聪明，加之喜欢吃苹果' (He is smart and, moreover, likes apples) is awkward.
'加之' usually introduces a clause that elaborates on or supports the previous statement. It is not used to start a new topic. Place it at the beginning of the additional clause.
Composed of two Chinese characters: '加' (jiā, meaning 'to add') and '之' (zhī, a possessive particle or connector). The phrase evolved from classical Chinese to modern usage as a conjunction to introduce additional supporting reasons.
1. '加之' is typically used in formal writing or speech to add a supplementary point. 2. It often appears at the beginning of a sentence or clause to introduce a reason or condition that further supports the previous statement. 3. Avoid overusing it in casual conversation; simpler conjunctions like '而且' or '并且' are more common in everyday speech.