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I've come across several sentences that have a lone subject or object and then
the verb without a particle to be heard of. One example is テーブルですか so my
question is, do I only need to use a particle when the subject or object is
not clear?
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2020-06-29T20:33:42.173
78307
2020-06-29T21:05:08.880
39515
question
particles
Do I only need particles if the subject is clear?
In spoken Japanese, subject, object, and topic particles are dropped if
context makes the role of each noun clear.

_僕テーブル買った_ is fairly certain to be understood as "I bought a table" without
the particles.

In your sentence, even with a subject, no particle would appear between テーブル
and です.

テーブルです。

これテーブルです。

これはテーブルです。

could all be interpreted as "This is a table."

If you are describing a quality of something with an "X desu" phrase, no
particle goes in between X and desu.
CC BY-SA 4.0
2020-06-29T21:05:08.880
78308
2020-06-29T21:05:08.880
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78307
answer