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Recently I was studying the use of から and だから as conjunctions. Could anyone
explain why one is used in these examples while the other is not? Are there
rules as to whether から and だから can follow a phrase or a clause? I am pretty
clear as to why から and だから are used in the first two examples, but in the last
three, in examples 1 and 2 I am confused as to why the answers provided to me
are the correct ones. I understand the second example.

> これは僕のお気に入りだから、気をつけて使って下さいね。 It's my favorite, so please be careful.
>
> 私は、日本語を学んですでに4年になるが、自分の日本語の不十分さから、日常生活で面白い失敗を起こすことは珍しくない。 It has been four
> years since I began learning the Japanese language, but since my Japanese is
> not proficient, it's not unusual for me to make some rather interesting
> mistakes in using Japanese in my daily life.
>
> １．最近寒い（から・だから）身体に気を付けて下さい。
>
> ２．最近寒くなった（から・だから）身体に気を付けて下さい。
>
> ３．例年以上の寒さ（から・だから）身体に気を付けて下さい。

Answers:

> 1．寒いから
>
> 2．寒くなったから
>
> 3．寒さだから
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2011-12-12T20:06:29.720
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2011-12-13T04:35:39.437
2011-12-13T04:35:39.437
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question
grammar conjunctions
How to use から and だから as conjunctions?
It's simply that だから is the copula だ + から. Therefore:

2 can't be 寒くなっただから because 寒くなっただ is nonsense; you don't put だ after verbs.

1 can't be 寒いだから for the same reason -- い-adjectives don't take だ. They take
です, as a politeness marker, but not だ.

3 can't be 寒さから because now から is following a noun instead of a clause or
sentence (which だ would have completed). When から follows a noun, it instead
means "from" (cf. が the subject particle / が meaning "but").
CC BY-SA 3.0
2011-12-12T21:00:18.193
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2011-12-13T01:45:03.013
2011-12-13T01:45:03.013
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answer