四种基本时态的用法.docx

现在进行时：be+doing表示说话时正在进行的动作，常与now连用，有时用look，listen等动词来表示now这一概念。如：Look!The car is coming! Listen! Someone is singing! The children are playing football on the playground now.表示现阶段正在进行的动作，现在进行时表示的动作不一定是说话时正在进行的动作，而是现阶段正在进行的。此时，常与at present目前，this week这周，these days这几天等时间状语连用。如：What are you studying these days? He is attending a international conference this week. （3）现在进行时可以表示将来时间。表示某个安排或计划好将要进行的动作，或即将开始或结束的动作。这类动词有：arrive、leave、come、land、sleep、fall、return等词。 如：He is meeting the president tomorrow. The train is leaving in ten minutes. The plane is landing in San Francisco on Tuesday morning. John is coming to the party tonight. （4）动词的进行时通常与always、constantly等频率副词连用，表示重复动作，用来表达说话人的不满、厌倦或者赞赏、满意等情绪。 如：It is always raining here.（表达说话人对雨的厌倦情绪） You are always making mistakes.（表达不满情绪） She is always helping others.（表达说话人对这种行为的赞赏）**掌握动词原形变成ing形式的规律。一般现在时：do/does、am/is/are一般现在时的用法表示事物或人的状态、特征。如：The sky is blue.天空是蓝色的。 I am a student,and he is a teacher.我是一名学生，他是一名老师。表示经常性的动作。如：I got up at six everyday.我每天六点起床。 He goes to school by bike.他（平时）骑车上学。描述客观真理。如：The Earth goes around the sun.地球围着太阳转。在if-从句中，可用一般现在时表示一般将来时。 如：If it rains tomorrow, the football match will be put off.如果明天下雨，那么球赛就会推迟。时间状语：everyday、every Sunday、at weekends、on weekdays、always、usually、often、sometimes、seldom、never、every Wednesday afternoon、on Sundays、at that time**掌握动词原形变成动词第三人称单数的规律。一般过去时：did、was/were1、表示过去某个时间发生的动作或存在的状态，常与表示过去的时间连用。 如：I went to the supermarket yesterday morning. She finished the task last night. The old man was a beggar before he found a job.2、表示过去经常或反复发生的动作。 My grandfather usually swam in the river when he was 8. I was naughty and my mother often scolded me when I was a little child.时间状语yesterday、last night、last Sunday、last month、the day before yesterday、at the age of 8、an hour ago、a week ago、、at that time、just now、以when引导的时间状语从句**背熟不规则动词表、掌握规则动词变成过去式的规律。1.AAA动词原形过去式过去分词cost[k?st]cost[k?st]cost[k?st]花费cut[k?t]cut[k?t]cut[k?t]割，切hurt[h?:t]hurt[h?:t]hurt[h?:t]受伤hit[hit]hit[hit]hit[hit]打，撞let[l