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特色双名师解密新课程高频考点,送国家电网教材讲义,助力一次通关
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1、当句子意思很清楚时,我们也可以把两个动词都换成一般过去时
例:We listened carefully when the teacher read the text. 老师读课文时,我们都仔细地听着。
2、表示按计划、安排过去将要发生的事。用于come,go,leave,start,arrive等表示位置转移的动词时,也可以用过去进行时表示过去将要发生的动作。
例:He told me(that)he was going soon. 他告诉我他很快就要走了。
3、表示故事发生的背景。
例:It was snowing as the medical team made its way to the front. 那支医疗小组往前线行进时,天正下雪。
4、表示一个新的动作刚刚开始,可用来引出一个新的动作。
例:Five minutes later,he stood in the doorway smoking a cigarette. 5分钟后,他已站在门口抽着烟。
5、过去进行时还可以和when结构遥相呼应,含有意外之意。
例:I was walking in the street when someone called me. 我正在街上走时突然有人喊我。
6、用来陈述原因或用作借口。
例:She went to the doctor yesterday. She was having a lot of trouble with her heart.她昨天去看病了。她患了很严重的心脏病。
7、与always,constantly等词连用,表示感情色彩。
例:The girl was always changing her mind. 这女孩老是改变主意。
8、用在状语中。
例:He felt asleep when he was reading. 当他阅读时,他睡着了。
变化规则
现在分词
1. 在动词原形后直接加-ing
look-looking cook-cooking read-reading
2. 以不发音字母e结尾的动词 ,去掉e再加-ing
write-writing live-living
3. 以重读闭音节结尾且末尾只有一个辅音字母的动词,双写该辅音字母后再加-ing
begin-beginning swim-swimming sit-sitting
4. 少数几个以ie结尾的动词,要变ie为y,再加-ing
tie-tying die-dying lie-lying
5. 以ic结尾的动词,要把ic变成ick再加ing
picnic→picnicking,traffic→trafficking
时间状语
this morning,the whole morning,all day,yesterday,from nine to ten last evening,when,while,at that time.
My brother fell while he was riding his bicycle and hurt himself;
It was raining when they left the station;
When I got to the top of the mountain,the sun was shining.
责编:郝悦皓
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