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1、-频率副词现在进行时-第 4 页现在进行时用法介绍1、现在进行时的用法现在进行时表示现在正在进行或发生的动作，也可表示当前一段时间内的活动或现阶段正在进行的动作。 2现在进行时的结构（1）现在进行时的肯定句基本结构为：主语 + be + v-ing. 如：He is studying in the room. 他正在房间里学习。（2）现在进行时的否定句在be后加not。 如：She isnt watching TV in the sitting room. 她现在不在客厅看电视。 （3）现在进行时的一般疑问句把be动词调到句首。 如：Is he studying in the room? 他正
2、在房间里学习吗？（4）现在进行时的特殊疑问的基本结构为：疑问词+ be + 主语 + v-ing? 如：What are you doing? 你正在做什么？疑问词当主语时其结构为： 疑问词+ be + v-ing? 如：Who is singing? 谁在唱歌？注意：be 动词的形式要与主语的人称和数保持一致。动词-ing的变化规则 1一般情况下，直接加ing，如：gogoing , read-reading, listen-listening , eat-eating 2以不发音的e结尾，去e加ing，如：make-making ,take-taking ,write-writing, c
3、ome-coming 3以重读闭音节结尾的动词，如果末尾只有一个辅音字母，应双写这个辅音字母，再加-ing，如：run-running, swim-swimming, sit- sitting,shop-shopping, stop-stopping, get-getting , put-putting, cut-cutting, begin- beginning现在进行时专项练习一、写出下列动词的现在分词： play_ run_ swim _ make_study_ like_ write_ ski _ read_ have_ sing _ dance_ put _ see_ buy _ l
4、ove _ live_ take _ come _ get _ stop_ sit _ begin _ shop _ work_二、用所给的动词的正确形式填空： 1.The boy _ ( draw)a picture now. 2. Listen .Some girls _ ( sing)in the classroom . 3. My mother _ ( cook )some nice food now. 4. What _ you _ ( do ) now? 5. Look . They _( have) an English lesson . 6.They _(not ,water)
5、 the flowers now. 7.Look! the girls _(dance )in the classroom . 8.What is our granddaughter doing? She _(listen ) to music. 9. Its 5 oclock now. We _(have)supper now 10._Helen_(wash )clothes? Yes ,she is . 三、句型转换： 1. They are doing housework .(分别改成一般疑问句和否定句) _ _ 2.The students are cleaning the class
6、room . (改一般疑问句并作肯定和否定回答) _ _ 3Im playing football in the playground .(对划线部分进行提问) _ 4Tom is reading books in his study . (对划线部分进行提问) _频度副词精讲一、 什么是频度副词 频度副词：是表示动作发生的频率，多与一般现在时连用。频率副词是一般现在时的“标志词”,它们是表示频率的副词。常见的这类副词有：always(一直，总是),usually(通常),often (时常，经常),sometimes(有时),seldom（很少）,hardly ever（几乎不），never
7、（从不）。 二、频度副词在句中的位置 频度副词在句中的位置一般在系动词be，情态动词或助动词之后，行为动词之前，如：放在be动词后面： Sheissometimeslate. 她有时来的比较晚。放在实义动词前面：Shesometimescomeslate. 她有时来的比较晚。在助动词之后： He doesnt always get up early. 他不总是早起。What time do you usually go to school every day？你通常每天什么时候上学？在情态动词之后：We will always love you. 我们将永远爱你。三、在表示动作发生的频率程度上
8、的不同：always usually often sometimesseldomhardly ever never1always意为“总是，一直；始终”。这是频率最大的词，表示动作重复，状态继续，中间没有间断。如：He always comes late. 他总是迟到。2usually意为“通常，经常”，表示习惯动作，频率仅次于always，相当于most often。表示除个别情况外，基本上没有变化。如：He usually gets up at 6 oclock他通常6点钟起床。3often意为“时常，经常，常常”，表示动作重复，中间有间断，表示发生的频率比usually要小，但比some
9、times要大。如： They often clean the classroom after school. 他们常常在放学后打扫教室。 4sometimes意为“有时”，（sometimes一词在书写时要十分小心，若分开写成 some times就成了“好几次，数次”。） sometimes的位置较为灵活，可位于句首、句中或句末。 如：They are always late for school. 他们总是上学迟到。 He has never been there. 他从来没去过那里。 Sometimes Tony goes to school by bike. 托尼有时骑自行车去上学。
10、He has lunch in the factory sometimes他有时在工厂吃午饭。 We sometimes go skiing in winter. 冬天我们有时去滑雪。I read this story sometimes 这个故事我读过好几次了。5. seldom意为“很少”，表示做很少做某事。如： I seldom play basketball. 我很少打篮球。 6. hardly ever 表示“几乎从不；很少；难得”。 =almost never或very seldom，如： He hardly ever goes to bed before nine oclock.
11、7. never = at no time或not ever表示“永不，从未”之意，相当于0%的频率。位置比较灵活，可以放在句首。例如： Never have I seen such a strange looking man.我从来没见过长相这样怪的人。四、对频率副词提问通常用how often这一短语,意为“多久一次”。 Li Ming usually does his homework after supper. (对划线部分提问) How often does Li Ming do his homework after supper? 另外，表示频率还可用一些副词短语来表示，如once
12、 a week一周一次， three times a year 一年3次等。 Take this medicine after meal three times a day.这药饭后服用，一日三次。 How often do you go shopping? 你多久购物一次？ Once a week. 每周一次。【跟踪练习】 选择填空：1. He _ goes to bed too late, because he has to get up early every day. A. always B. never C. usually D. sometimes2. _ does Tom wri
13、te a letter to his parents? Twice a month. A. How often B. How many times C. How soon D. How long 3. They are going to stay here for _. A. sometime B. sometimes C. some time D. some times 4. He hardly has lunch at home, _? A. does he B. doesnt he C. has he D. hasnt he 5.She always finishes her homework on time. She_ leaves it for tomorrow.A. always B. never C. usually D. sometimes