八年級英語下冊詞組和重點教案1
i was walking down the street when a ufo landed right in front of me.
you can image how strange it was.
i followed to see where it was going.
isn’t that amazing!
she didn’t thinking about looking outside the station.
i was so tired this morning. it was difficult to get out of the bed.
liu xiang won the gold medal at the olympics.
beijng was made host to the olympics.
people often remember what they were doing when they heard the news of important events in history.
this was one of the most important events in modern american history.
even the most everyday activities can seem important.
our teacher asked us to stop what we were doing and listen.
however, in more recent times, most americans remember what they were doing when the world trade center in new york was destroyed by terrorists.
not all events in history are as terrible as this, of course.
his flight around the earth lasted about 22 hours.
本單元語法講解
過去進行時（past progressive tense）
句型 s + was/were +v-ing…例a：she was doing her homework at 8:30 yesterday evening.（昨天傍晚八點半她正在做家庭作業(yè)。）
例b：we were having supper at that time.（那個時候我們正在吃晚飯。）
解說 如例1所示，在單句中使用過去進行時來表達時必須把該動作正在進行中的時間表明清楚，否則就不合邏輯了。
例如：i was taking a bath yesterday. （錯）
（昨天我正在洗澡——昨天24小時都正在洗澡嗎？）
所以本句應該如例1來表達，或者用一般過去時表達如下：
i took a bath yesterday.（昨天我洗了澡。）
如果由上下文的文意，或者對談中的話意可以了解“動作正在進行中的時間”，單句里就使用過去進行時來表達是很普通的，例如：
a：i called you up yesterday evening. b：did you? at what time? a：at around ten o'clock. （大約在十點鐘。） b：oh, i was taking a bath then.（哦，當時我正在洗澡。）
過去進行時在表達上常用的句式是如例2所示和另一個一般過去時的動作相搭配。請觀察下面的圖解說明：
過去有二動作a和b（如圖示），在b動作發(fā)生時稍早發(fā)生的a動作正好在進行中，所以這種表達法通常都是復句（主句+副詞從句）。例如： when i got up this morning, mother was preparing breakfast in the kitchen.
（今天早上我起床時媽媽正在廚房里準備早餐。—“mother…。”是主句，“when…，”是副詞從句。）
常用于修飾過去進行時的時間副詞：過去的某一定點時刻（at + 過去的時刻），then （= at that time）（那時，當時），all + 時間，“when…/while…/as…”等副詞從句，etc.
unit 4 he said i was hard-working
every saturday 每周六
first of all 首先
both…and…兩者都（謂語動詞要注意對稱原則）
neither….nor 兩者都不（謂語動詞要注意就近和對稱原則）