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...to結(jié)構(gòu)中不定式前可加邏輯主語(yǔ) ,表示動(dòng)作的執(zhí)行者 ,常由 for引出。例如 : The Maths problem is too hard for them to work ,他們算不出來(lái)。 ...to結(jié)構(gòu)和否定詞 never或 not一起使用時(shí) ,并不表示否定意義。例如 : One is never too old to ,學(xué)到老。 Ⅰ .單項(xiàng)填空 ( B ) ate just is and can’t eat any more. food。enough full food。full enough enough。full enough enough。enough full ( A ) young man is carry that heavy bag. enough to strong to strong enough enough ( D )3.—Mum,can I hel