第一章 命题逻辑

发酵食品是指经过微生物(细菌、酵母和霉菌等) 酶的作用使加工原料发生许多理想的十分重要的生物 化学变化及物理变化后制成的食品。从原理上讲,世 界各国的发酵食品独特的风味和风格都是建立在微生 物生命运动的基础上。发酵食品的微生物学不仅仅是 发酵食品生产的生物学基础和生产实践原理的源泉, 而且是微生物学重要的组成部分

Unit 3 1. It is important that the hotel receptionist that guests are registered correctly A)has made sure B)made sure C)must make sure D)make sure

在 There be句型中 There is no smoke without fire There seems to be little time left There,here结构中,如果主语有好几个,谓语动词 与最邻近的主语一致。 There was a TV set, a portrait and several albums on the shelf

1. If you had come earlier, you the famous scientist a could be met b. might meet c would have met d. would meet

1. for the people is a glorious death. a. To die b.Dead c. To be died d. Being died

1全部倒装( Full Inversion,又称主谓倒装 (Subject-verb Inversion) 例如: Here are some letters for you Down poured the rain Into the coach scrambled the children

后接动名词作宾语的常用动词有: admit advise allow anticipate appreciate avoid risk delay deny dislike dread 后接动名词(或名词)作宾语的常用短语

till after, from behind, except in We stayed there till after the sunset He picked up the gun from behind the counter The weather has been fine except in the north

情态动词( model verb)用来表示能力 允许、可能、必须、劝告、意愿等概念或态 度。主要的情态动词有can( could),may might), shall(should), will (would) must, ought to,ned,dare等。情态动词没有 人称和数的变化,其后常跟不带to的不定式