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课件网) 牛津译林版九年级英语下册 Unit2 Great people Grammar Tip: We often use these words with the present continuous tense. at the moment, today, now, right now, Listen!, Look! Tense Used for Example Present continuous actions that happen right now Look! The reporter is interviewing the astronaut. actions that happen at the same time Mum is doing the housework and Dad is working on the computer. actions in a limited period of time I am working on a history project this week. arrangements for the near future I am leaving for Shanghai tonight. Millie is writing about what her family members are doing. Help her complete her article with the correct tenses of the verbs in brackets. ▲ I (1) _____ (have) a day out with my classmates this Saturday, so I (2) _____ (need) a pair of trainers. Mum (3) _____ (shop) online for me now. She often (4) _____ (shop) online. Dad (5) _____ (search) for information on the Internet. He (6) _____ (visit) Japan next week. Grandpa (7) _____ (read) the newspaper and Grandma (8) _____ (watch) TV. I (9) _____ (want) to write an email to Wendy before I (10) _____ (go) to bed. am having need shops is shopping is searching is visiting is reading is watching want go Tip: We often use these words with the simple past tense. yesterday, ... ago, in 1999, the other day, last ... 一般过去时 表示过去某个时间路生的动作或状态 ;过去习惯性、经常性的动作、行为;过去主语所具备的能力和性格。 动词变化: 1.直接加ed。work-worked look-looked 2.以不发音e结尾的单词，直接加d live- lived hope-hoped use-used 3.以辅音字母加y结尾的,变y为i加ed : study-studied carry-carried 4.以一个辅音字母结尾的，双写最后的辅音字母+ed: stop-stopped plan-- planned 5.以ic结尾的动词，要把ic变成ick再加ed,如picnic-picnicked traffic-→trafficked 6.不规则变化的动词过去式. have-had are-were B Simple past and past continuous Tense Used for Example Simple past actions that happened in the past Simon played football yesterday. actions that happened one after another in the past Simon came home, turned on the computer and checked his email. 一般过去时&现在完成时 一般过去时表示在过去某个时间发生的动词或存在的状态，也表示过去经常或反复发生的动作。 e.g. He came here yesterday. 现在完成时表示过去的动作(或状态)对现在产生的影响和结果 e.g. He has broken his bottle. Tense Used for Example Past continuous actions that were in progress at a certain time in the past Yesterday at 4 p.m., Simon was playing football. actions that happened at the same time in the past Simon was playing computer games while Millie was watching TV. actions that lasted for some time in the past We were having a meeting from 9 a.m. to 11 a.m. yesterday. Simple past & Past continuous ◆一般过去时 表示过去发生的动作或存在的状态，时间状语一般为last week / month / year, three days ago, yesterday, the day before yesterday等。 ◆过去进行时 表示过去某个时刻或某一阶段正在进行的动作，常用时间状语为then, at that time, at this time last night / year, when引导的时间状语从 ... ...
