公本网校英文标题中哪些单词不可首字母大写02

二、哪些单词不能大写首字母？

1. 字母少于5个的介词和连词。

介词举例：at, down, for, from

连词举例：and, as, but, for, if

2. 冠词：a, an, the 。

3. to（即使是作为不定式出现）。

三、常用虚词分类汇总

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大写：About, Above, Across, After, Against, Along, Although, Among, Around, Because, Before, Behind, Below, Beneath, Beside, Between, During, Except, Inside, Outside, Since, Through, Toward, Under, Underneath, Unless, Until, Whenever, Where, Whereas, Wherever, While, Within, Without

小写：a, an, and, as, as if, as long as, at, but, by, even if, for, from, if, if only, in, into, like, near, now that, nor, of, off, on, on top of, once, onto, or, out of, over, past, so, so that, than, that, the, till, to, up, upon, with, when, yet