文法講座 025：「不定詞」和「動名詞」
http://www.learnerhall.org/2012/12/blog-post_2238.html
不定詞為「to + 動詞原形」所組成，而不定詞的否定則為「not to + 動詞原形」。
例：媽媽叫我不要熬夜。她叫我早睡。
Mom tells me not to stay up late. She tells me to go to bed early.
▍不定詞的用途
1️⃣ 放句首當主詞
1️⃣ 放句首當主詞
例：規律運動是很重要的。
To exercise regularly is important.
To exercise regularly is important.
2️⃣ 補充說明虛主詞 it
例：規律運動是很重要的。
It is important to exercise regularly.
3️⃣ 放動作後當受詞
例：我不想聽你的藉口。
I don’t want to listen to your excuses.
I don’t want to listen to your excuses.
4️⃣ 放名詞後當形容詞
例：我無話可說。
I have nothing to say.
I have nothing to say.
5️⃣ 可表「為了…」
例：為了看清楚，我戴上我的眼鏡。
To see well, I put on my glasses.
To see well, I put on my glasses.
6️⃣ 太…以至於不能…：too 形容詞 / 副詞 to 動詞原形
例：他太生氣以至於說不出話來。
He's too angry to say a word.
He's too angry to say a word.
7️⃣ 夠 … 足以 …：形容詞 / 副詞 enough to 動詞原形
例：他夠勇敢，敢說實話。
He's brave enough to tell the truth.
He's brave enough to tell the truth.
▍後方需接不定詞的動詞 (片語)
