元音字母a、i、o、u、e 现在进行时的用法：表示说话的时候动作正在进行 现在进行时的构成是:主语+be+v.ing〔现在分词〕形式 第一人称单数I+am+ing. I am writing now . 第一人称复数We+are+ing. We are singing now. 第二人称单(复)数 You+are+ing You are talking now 第三人称单数 He（She，it）+is+ing He si chasing 第三人称复数 They+are+ing They are playing 肯定句:主语+be（is/am/are）+现在分词 否定句：否定句式是在be动词后加not I am not working. He isn't runnig or the track. The students aren't playing football 一般疑问句: 是将be移到主语前面，句末加问号 Are they swimming ? Yes, they are. / No, they aren't. Is he running ? Yes, he is. / No, he isn't. 一、 如何加ing 1、一般情况下直接加ing work-working、talk-talking、go-going 2、不读音的e结尾，去e再加ing chase-chasing、come-coming 3、以单元音+单辅音字母结尾的单词，双写末尾辅音字母再加ing get-getting、run-running、swim-swimming、 4、以ie结尾的单词去ie改为y再加ing die-dying、lie-lying 名词变复数用法： 1．一般情况下，直接加-s，如：book-books, bag-bags, cat-cats, bed-beds 2．以s. x. sh. ch结尾，加-es，如：bus-buses, box-boxes, watch-watches 3．以“辅音字母+y”结尾，变y为i, 再加-es，如：family-families, strawberry-strawberries 4．以“f或fe”结尾，变f或fe为v, 再加-es，如：knife-knives 5、不规则名词复数：man-men、woman-women、policeman-policemen、policewoman-policewomen、child-children、foot-feet、tooth-teeth、sheep-sheep、people-people、Chinese-Chinese、Japanese-Japanese、当people后加上s时即peoples表示“民族”例如There are 56 peoples in China. 以下词为常为不可数名词，他们的复数形式就是他们本身。 water(水) milk(牛奶) tea(茶) rice(米饭) orange（橙汁）juice（果汁）bread（面包） I _________this ___________ watch _______child ________diary ______ day________ foot________book_______ dress ________ tooth_______ sheep ______box_______ strawberry _____ thief _______ peach______ paper_______ sandwich ______ man______ woman_______ milk________ juice_____ water________ rice__________ tea_______ 本文来源：https://www.wddqw.com/doc/e08f5df19e31433238689300.html