081 接続詞(conjunctions)② 従属接続詞
従位接続詞とも呼ばれる
「～だから…」「～したときに…」「もし～したら…」のように、
…の部分（主節）に、～の部分（従位節）を結びつけるのが従位接続詞
従位節には「名詞節」と「副詞節」がある
形容詞節には関係詞を用いる
[解説]
副詞節を導く従属接続詞
when, while, until, before, after, since, as 「～するにつれて／～するように」
because/as/since 「～なので」
…as soon as ～
as far as/ as long as 「～する限り（※範囲／条件）」
even if [even though]
though [although]
[例文]
1 I was watching a film wen the power went out.
2 Strike while the iron is hot.
3 I have lived in Tokyo since I was eighteen.
4 I had lived in Kyoto until I was eighteen.
5 We couldn't play tennis because it was raining.
6 As far as I know, she speakes good English.
「私の知る限りでは、彼女は上手な英語を話します」（範囲）
cf. as long as ～ 「条件」
This bicycle will give you long use as long as you take good care of it.
「この自転車は手入れさえすれば長持ちしますよ」
7 I will stay home if it rains tomorrow.
8 I have to go even if it rains cats and dogs.
9 Though I did my best, I lost the game.
※althoughは書き言葉で文頭で使われることが多い
≒I did my best , but I lost the game.
butは等位接続詞
※主節と従属節の位置は入れ替えることができる
≒Because it was raining, we couldn't play tennis.
cf. 前置詞句 because of the rain 「雨のせいで」
