aamp; usage of an

The syllabus vocabulary starting from elementary school starts with a and an, which are used in special sentences.

First of all, it is used as an indefinite article, which means "one". The indefinite article often precedes a noun or a noun modifier. But you need to pay attention to the following points:

1. After the following adjectives: such, what, many, half

2. When the adjective in front of the noun is replaced by the adverb as, so, too, When modifying how, however, or enough, the indefinite article should be placed after the adjective: It is as plesant a day as I have ever spent.

3.quite, rather are used with singular nouns, and the article is placed after Later, if there are adjectives before "quite" or "rather", the indefinite article can be placed before and after: "quite a lot

4. In the concession adverbial clause introduced by "as", "though", when the slogan is a noun modified by an adjective, The indefinite article is placed after the adjective: Brave a man though he is, he trebles at the sight of snakes. When the noun is modified by a comparative adjective, the indefinite article is usually placed after the comparative adjective.

Followed by aamp; which words should be added before an:

an is used before words whose pronunciation starts with a vowel (note not the vowels a, e, i , o, u), there are three points to pay attention to: