? ? ??用法一: 表示現(xiàn)在經(jīng)常性或習(xí)慣性的動(dòng)作。(動(dòng)詞用原型,第三人稱+s)

  1.Tom wears a belt round his waist. 湯姆腰里系著一根皮帶。

  解析:Tom (第三人稱)wears(wear+s 即原型+s) a belt round his waist.
  這里表示經(jīng)常性的、習(xí)慣性的動(dòng)作,Tom 昨天腰里系著一根皮帶,今天也系了,明天、后天……或許一直系了著,一直處于這種狀態(tài)。
  2.The train goes backwards and forwards between the two towns. 這列火車在兩座城市間來回開。
  3. I leave home for school at 7 every morning.
  用法二: 觀真理,客觀存在,科學(xué)事實(shí)。
  The earth moves around the sun.
  Shanghai lies in the east of China.
  The sick child is better today. 生病的孩子今天身體好點(diǎn)了。
  I enjoy songs such as this one. 我欣賞這樣的歌曲。
  I like all musical instruments except the violin. 除了提琴我什么樂器都喜歡。
  用法三: 表示現(xiàn)在的能力、特征、職業(yè)等。
  He sings well. 他唱歌唱得好。
  Mr. Smith teaches French. 史密斯先生教法語。
  用法四: 表示客觀真理、科學(xué)事實(shí)、格言以及不受時(shí)間限制的客觀存在。
  Summer follows spring. 春去夏來。
  Knowledge is power. 知識(shí)就是力量。
  The earth turns around the sun. 地球繞著太陽轉(zhuǎn)。
易錯(cuò)點(diǎn)擊:
? ? 在做題時(shí),錯(cuò)誤主要出現(xiàn)在人稱及句式變換上。 ??
  其句式變化可分為兩種情況
  1)表示動(dòng)作, 一般人稱作主語的,變否定句須在動(dòng)詞前加助動(dòng)詞don’t;變一般疑問句須在句首加助動(dòng)詞do。
  例. They have lunch at 12:00. They don’t have lunch at 12:00. Do they have lunch at 12:00?
  2) 單三人稱做主語的,變否定句須在動(dòng)詞前加助動(dòng)詞doesn’t;變一般疑問句須在句首加助動(dòng)詞does。
  例. Jenny speaks English very well.
  Jenny doesn’t speak English very well.
  Does Jenny speak English very well?
  含有be動(dòng)詞的要在be上做變化.
  例. Danny is a good student.
  Danny isn’t a good student.
  Is Danny a good student?
  其時(shí)間狀語為often、 usually、 always、 sometimes等頻率副詞,on Saturdays、 in the morning(afternoon evening) 、every day 等。