Modifiers are parts of speech that describe other words. They include adjectives, and adverbs. I'd like to talk to you about adjectives in particular. Adjectives describe other nouns whereas adverbs describe other verbs. So it's important not to get the two confused when you're trying to learn how to use adjectives in a sentence.
As a general rule adjectives can describe type, color, quantity, quality, or designation. So when you see words like blue, if you see a number like nine, that's a key that you're looking at a adjective.
I'll give you some examples in a sentence. In this sentence, "The Met is crowded today." Our adjective is crowded, and that's because it's describing the Met Museum, so it's a describing word.
I might say something like this to my husband, " Did you eat more than one chocolate chip cookie?" This is a little bit more of a complicated sentence then the last one we looked at, because we have more than one adjective. In this case, one and chocolate chip are both functioning as adjectives, because they're both describing the cookie. We have one of them, and the type is chocolate chip.
It's important to note that you can have more than one adjective in a sentence. You can have even more than two adjectives in a sentence. And you can have adjectives that are describing different things in your sentence.
Here's an example, " The quick brown fox, jumps over the lazy dog." In this case, both quick, and brown are describing fox, and lazy is describing the dog. So our adjectives in this sentence are quick, brown, and lazy. And that's how you use adjectives in a sentence.