不定詞の構文

<程度・結果>
too ~ (for S') to …
=so ~ that S cannot V
cannot を取り除くと、so ~ that S V
=~ enough to …
=so as ~ to …
<目的>
so as ~ to …は so as to とごっちゃにならないように。
so as to …
=in order to …
これを節を用いて表すと
in order that S V.
=so that S 助動詞 V
⇔so that S 助動詞 not V.
=for fear that S (should) V.
=lest that S (should) V.
<自動詞+不定詞>
①状態動詞を動作動詞にする。→「~するようになる。」
come to do / get to do / grow to do
②節で書き換えられる
S seem to do
=It seems that S V.
~のようだ、~らしい
S appear to do
=It appears that S V.
S happen to do
=It happens that S V.
たまたま~する
S prove to do
=It proves that S V.
~であることが分かる
S turn out to do
=It turns out that S V.
<結果>
・only to do:が結局~しただけだった
When I visited him, only to find that he was out.
・never to do:そして二度と~しなかった
The rocket went up into the sky, never to return.
<助動詞で書き換えることができる>
be to do
①will
②must/should
③can
<独立不定詞>
to tell (you) the truth:本当のことを言うと
to be frank with you:率直に言えば
to be sure:確かに、なるほど
to begin with:まず第一に
needless to say:言うまでもなく
strange to say:奇妙な話だが
to make matters worse:さらに悪いことには
so to speak:いわば
not to say A:A とは言わないまでも
to say nothing of A:A は言うまでもなく
not to speak of A:A は言うまでもなく
not to mention A:A は言うまでもなく