b)过去进行时还常常和一般过去时配合使用。此时，过去进行时通常表示一个历时较长的体现背景的动作或状态;而一般过去时表示此背景下发生的短暂的动作或状态。 如：I cut my finger when I was cooking the dinner last night.昨晚做饭时我割...

2021-04-07 公共课

二、表示进行动作的动词时态：现在进行时、过去进行时、将来进行时 1.现在进行时：表示正在进行的动作或者现阶段正在持续的动作。其形式为am/is/are doing.常与进行时连用的时间状语有：now, at this moment, at present等。 如：What a...

2021-04-07 公共课

3.一般将来时表示在未来的某个时间将要发生的动作或状态。其形式will do或be going to do。 如：We will have a picnic tomorrow. We are going to have a picnic tomorrow. 我们明天要去郊游。 1)will 和be going to 的区别 a)一般将来时表示预测时，我们可以...

2021-04-07 公共课

握的语法：动词的时态 英语中时态从时间上划分，可以分为：现在时、过去时、将来时和过去将来时，每一类从行为上又可分为四种形式：一般式、进行式、完成式和完成进行式。这样，英语中的动词共有十六种时态。下面以wo...

2021-04-07 公共课

短语表达 1. difference betweenand Will you please tell me the difference between a horse and a seahorse? 2.neither nor I have neither seen him nor heard from him since we last met. 3. look up The little boy didnt dare to look up at his teacher. 4. a matter of...

2021-04-07 公共课

11. People would pick up handfuls of gravel from the bottom of the streams and sort out the diamonds. -ful通常加在名词后面，构成形容词，如care-careful，help-helpful.而本句中的handful是一个名词，意思是一把，在单词部分，我们已经提到过，英语中有不少这...

2021-04-07 公共课

6. It is thought that millions of years ago this liquid mass pushed upward through cracks in the earths crust. It is thought that是一个很常用的句型，类似的句型在英语中很多，比如： 1) It is / was， has been， reported that 2) It is / was， has been， stated that 3) It is...

2021-04-06 公共课

3. Diamonds are made from carbon. 由制成，可以用be made from和be made of两个词组来表达。但是be made from通常指制成品已看不出原材料是什么，而be made of可以看出该物品由什么材料制成的。 4. Scientists know that the combination of extreme heat and press...

2021-04-06 公共课

主要构词法 affixation(词缀法) 1.形容词后缀 -ful beautiful，useful， 2.形容词后缀 -ive impressive 3.形容词后缀 -y greasy 4.名词后缀 -ation combination，formation 5.名词后缀 -ure pressure 6.名词后缀 -y discovery 7.名词后缀 -er traveler，miner 8.名词后缀 -...

2021-04-06 公共课

10. popular adj. 流行的，大众的;普及的;受欢迎的 Popular music is well liked by young people.〔流行音乐深受年轻人的喜爱。〕 Swimming is a sport popular with people of all ages.〔游泳是老老少少都喜欢的体育运动。〕 He has always been popular with / among b...

2021-04-06 公共课

主要单词 1. rare adj. 稀有的，难得的 a rare word〔冷僻的词〕 rare metals〔稀有金属〕 a rare disease(罕见的疾病) 2. substance n. 物质;实质;大意;根据 Ice， snow and water are the same substance in different forms.〔冰、雪、水是同一物质的三种不同形式...

2021-04-06 公共课

短语表达 1. a great deal We learned a great deal from her. 2. be like Look at the little boy， he is so much like his father. 3. have time for Dont worry， we will have enough time for discussion. 4. engage in It is not appropriate for a former president to eng...

2021-04-06 公共课

主要词组 1. be eager to 2. be supposed to 3. fall in love 4. grow up 5. be supplied to 6. substitute for 7. have sth. to do with 8. at the meal 9. as a matter of fact 10. think of as 11. in the same way 主要句型 宾语从句 1. Many people believe that by eating an anima...

2021-04-06 公共课

4. It was once thought Eggs were thought to make the voice pretty. Tomatoes were believed to have magical powers They were called love apples and were supposed to make people who ate them fall in love. 上面的这些句子全部用的是被动语态。 suppose 是一个常用词，请注意掌握。...

2021-04-06 公共课

主要构词法 affixation 词缀法 1.名词后缀 -ity quality 2.名词后缀 -ation;-ion; combination， civilization， foundation， digestion 3.名词后缀 -ture mixture 4.形容词后缀 -ous poisonous 5.形容词后缀 -ible indigestible 6.形容词后缀 -ful helpful， powerful 7.副词前缀...

2021-04-06 公共课