Grammar Info
N5 Lesson 8: 2/13

沢山(たくさん)
Many, A lot of, Plenty, Enough

たくさん often comes directly before verbs

Structure
たくさん + Phrase
たくさん +() + Noun
Details
Part of Speech Noun
Word Type Ordinary
Register Standard
品詞 名詞
単語の種類 一般
使用域 一般
Information
There are many cases in Japanese where a noun will appear as an adverb, particularly with words that are describing amounts. たくさん, or 沢山(たくさん) as it is regularly seen, is one of those words. たくさん means ‘a lot’, or ‘many’ in Japanese, and can be used before a phrase, or directly before a noun, when separated via .
  • 沢山(たくさん)食(た)べ!
    Eat a lot! (Eat to your heart’s content!)
  • この島(しま)沢山(たくさん)猫(ねこ)がいます
    On this island, there are a lot of cats. (Unrelated to the sentence, there is actually an island like this in Japan!)
Caution
たくさん may be used before a noun without also using . However, in this case, it will feel more like たくさん is describing the whole phrase, rather than just the noun it is in front of. If you strongly want to highlight the noun, using would be best.
  • あの店(みせ)前(まえ)に沢山(たくさん)人(ひと)が集(あつ)まっている
    There are a lot of people gathering in front of that store. (Focuses on the store. I wonder why there are so many people in front of that store)
  • あの店(みせ)前(まえ)に沢山(たくさん)人(ひと)が集(あつ)まっている
    There are a lot of people gathering in front of that store. (Focuses on the people. The amount of people gathering up in front of that store is unbelievable)
In these examples, the only difference is that the sentence with feels like the speaker is putting extra focus on the people, rather than the gathering that is happening.
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たくさんありますから食(た)べてください
There is plenty. So, please eat.
Play  
たくさん(の)雪(ゆき)降(ふ)りました
A lot of snow fell.
Play  
たくさん(の)仕事(しごと)します
I will do a lot of work.
Play  
Online
Books
Genki I 2nd Edition
Page 112
みんなの日本語 I
Page 62 [CH 9]
Tae Kim's Japanese Grammar Guide
Page 78