Grammar and usageTeaching objects:1. Learn the usage of verb-ed form and verb-ed phrases2. Learn the difference and usage of verb-ing and verb-ed as adjectivesTeaching procedures:Step I IntroductionVerb-ed form can be used like an adjective or an adverb in a sentence serving as(充当) attribute(定语), predicative(表语) and object complement(宾语补足语)When the verb-ed form is used as an attribute, it can be changed into an attributive clause. The verb-ed form can also be used as an adverb modifying(修饰) some verbs such as stand, sit, lie etc. to show the two actions happening at the same time.Please identify the parts of speech(词性) of the verb-ed form in different sentences1) The handwritten notes are from jack.2) The kidnappers were using a stolen car.3) A dark-haired man went into the room.4)The cake was left untouched on the table.5) The girl lay trapped under the wreckage(船舶残骸).Step II the usage of verb-ed formThe functions of verb-ed form1. attribute(定语)1)A single verb-ed can appear before a noun modifying the noun like an adjective. It can be changed into an attributive clause.We should drink boiled water. = We should drink water which has been boiledThey took the injured woman to the nearby hospital at once.= They took the woman who was injured to the nearby hospital at once.2) Generally speaking(一般说来), the verb-ed form of transitive verbs(及物动词) expresses passive meanings while the verb-ed form of intransitive verbs(不及物动词) expresses active and past meanings. Some verb-eds before nouns can express past meanings, such as escaped, retired and fallen.the escaped criminal逃犯 pastthe developed countries发达国家 pasta widely used language passivethe retired scientist pastthe highly praised scientist passivefallen leaves 落叶 pastthe risen sun升起的太阳 pastthe exploited classes 被剥削阶级 passive3) A verb-ed phrase can appear after a noun to modify the noun like an attributive clause does.The name mentioned in the letter was unknown to me.= The name which was mentioned in the letter was unknown to me.The firemen were trying to rescue the people trapped in the fire.= The firemen were trying to rescue the people who were trapped in the fire.Scientific experiments carried out by students without the teachers instructions can be dangerous.= Scientific experiments which are carried out by4) A verb-ed can be part of a compound(复合词) with an adverb or a noun before it.a so-called professor 一个所谓的教授homemade pizza 自制的比萨饼a well-accepted idea 广泛接受的想法a highly-respected professor 极受尊重的教授a well-paid job 报酬颇丰的工作underdeveloped regions 不发达地区handmade furniture 手工制作的家具5) A verb-ed can also be used as a non-restrictive attribute (非限定性定语) which is separated from the noun it modifies by a comma(逗号).The books, written by Lu Xun, are popular with many Chinese people.= The books, which were written by Lu Xun, are popular with many Chinese people.The meeting, attended by one thousand students, was a success.= The meeting, which was attended by one thousand students, was a success.2. predicative (表语) It can be put after some link-verbs (系动词) such as: be, seem, appear, look, sound ,feel, remain, stay, become1) Edison became interested in science when he was very young.2) The little boy was very excited when he heard that he could go to the party.3. Object complement (宾语补足语) It can be used after some verbs such as: see, hear, notice, watch, find, get, have, feel, make, leave, keep 1) As he knows little English, he finds it difficult to make himself understood.2) I had my hair cut yesterday.3) She found the door locked.4.A verb-ed can be used after verbs like stand, sit and lie to show that the two actions are happening at the same time.The girl lay in bed lost in thought.= The girl lay in bed and was lost in thought.The boy sat at the table buried in his homework.= The boy sat at the table and was buried in his homework.Key for Exercise A : (1) disappointed (2) puzzled (3) excited (4) thrilled (5) interested (6) boredKey for Exercise B:2.The problems created by cloning will soon be clear.3.We dont want beasts produced by scientists to replace us one day.4.The technology used is amazing.5.The only thing needed is just a cell from your old pet.Step III The usage of verb-ed phrasesA verb-ed phrase is actually a verb-ed followed by an object or /and adverbial. The verb-ed phrases can be used as the adverbial(状语) to express the time, the reason and condition1.A verb-ed phrase can be a verb-ed on its own. It can also be followed by an object and/or adverbial.1) She left the restaurant, disappointed.2) She left the restaurant, disappointed with the bad service.3) Heated, water changes into steam.4) The girl was sent to the hospital, seriously injured.5) The girl was sent to the hospital, seriously injured in