(
课件网) Avoid Danger, Keep Safe UNIT 7 Grammar Focus Read the sentences below. Review the sentence structures. P65 3a 现在进行时 一般过去时 can/could表示请求允许及回答 现在进行时 ① Am I going the right way 我走得对吗？ ② My elder brother is coming tomorrow. 我哥哥明天来。 ③ We are having a meeting tomorrow morning. 我们明天上午要开会。 现在进行时可以用来表述现在正在发生的事情或行为，如①。现在进行时还可以用来表示为将来安排好的活动或事件②、③。 V-ing变化规则 work - working buy - buying ① 一般情况下，动词后直接加-ing take - taking have - having ② 以“不发音的e”结尾的动词，去掉e，加-ing stop - stopping prefer - preferring ④ 以“辅音字母 + 元音字母 + 辅音字母”的重读闭音节 结尾的动词，如果末尾只有一个辅音字母，双写辅 音字母，然后加-ing tie - tying die - dying ③ 以“-ie”结尾的单词，把ie变成y，再加-ing 一般过去时 ① Well, I visited the Giant's Causeway two years ago. 哦，两年前我游览了巨人之路。 ② I was very thin in my childhood. 我小时候非常瘦。 ③ I got up very early when I was a college student. 我上大学时起得很早。 一般过去时可以用来表述过去某个时间发生的事情或行为，如①。一般过去时还可以用来描述事物过去的状态或过去经常发生的事情，如②、③。 ① Be动词 ② 实义动词 Do did 动词过去式的变化规则： 1. 一般在动词末尾加-ed, 如: pull-pulled, cook-cooked 2. 结尾是e加d, 如: taste-tasted 3. 以“辅音字母+y”结尾的, 变y为i, 再加-ed, 如: study-studied 4. 末尾只有一个元音字母和一个辅音字母的重读闭音节, 应 双写末尾的辅音字母, 再加-ed, 如: stop-stopped 5. 不规则变化 主语人称 be动词的过去形式 第一人称单数、第三人称单数 第一、三人称复数、第二人称 was were 动词过去式的不规则变化： am/is-was are-were do-did see-saw say-said give-gave get-got go-went come-came have-had eat-ate take-took run-ran sing-sang put-put make-made read-read write-wrote draw-drew drink-drank fly-flew ride-rode speak-spoke sweep-swept swim-swam sit-sat can/could ① She can speak three languages fluently now. 她现在能流利说三种语言。 ② Could I borrow your dictionary for a while 我能借你的字典用一会儿吗？ ③ Can you please pass me the salt 你能递给我盐吗？ can 和could可以用来谈论主语所具备的能力，意为“能，会”，如①。can, could还可表示请求“许可；允许”或提出自己的请求，如②③。can, could还可以用于提出建议，如④。 ④ We could have a picnic in the park this weekend. 我们这周末可以去公园野餐。 ① - Excuse me, Miss Li. Could I use the globe for a minute - Certainly. Here you are. —打扰一下，李老师。我能用一下地球仪吗？ —当然可以。给你。 ② - Can you please help me clean the classroom after school - Sorry, I can't. I have a piano lesson to attend. —放学后你能帮我打扫教室吗？ —不好意思，我帮不了。我得去上钢琴课。 can, could表示请求“许可；允许”或提出自己的请求时， 肯定回答：Yes, you can. / Certainly. / Yes, good idea! / Yes, sure. / No problem. / Certainly. / Of course. /... 否定回答：Sorry, you can't. / I'm afraid you can't. / Sorry, I can't. / I'm afraid I can't. /... P65 Complete the sentences using the correct forms of the verb ... ...
