beginning of a sentence; sentence-initial position
Refers to the start of a sentence or phrase, often used in grammar or writing contexts.
It's better to avoid using 'however' at the beginning of a sentence.
In English, the beginning of a sentence is capitalized.
文中 refers to a position inside a sentence, while 文頭 refers specifically to its beginning.
Compound of 文 (sentence) and 頭 (head, beginning).