1. 表示以前沒有某物的句型

　　There was no + 單數(shù)名詞或不可數(shù)名詞 + 過去時(shí)間。There was no library in my old school.

　　There were no + 復(fù)數(shù)名詞 + 過去時(shí)間。There were no computers or Internet in my time.

　　注意： no+ 名詞相當(dāng)于not a / an / any + 名詞。 There weren’t any computer rooms at all. There was no gym ,either.

　　2. 表示不喜歡的句型

　　I didn’t like + 名詞或動(dòng)名詞。如：

　　Before I didn’t like dogs. Before I didn’t like beef. Before I didn’t like going running.

　　3. 表示過去不能做或不會(huì)做的句型

　　I couldn’t + 動(dòng)詞原形。 I couldn’t go cycling before. People couldn’t use the Internet in the Tang dynasty.

　　4. 如何描述某人過去和現(xiàn)在的不同情況

　　① 外貌和性格：Before, 主語(yǔ)+was / were +形容詞. Now，主語(yǔ)+am / is / are +形容詞.

　　Before I wasn’t tall. I was quiet. Now I am tall. I am active.

　　Before she had short hair. Now she has long hair.

　　Before he didn’t wear glasses. Now he wears glasses.

　�、谀芰Ψ矫妫築efore, 主語(yǔ)+couldn’t +動(dòng)詞原形. Now, 主語(yǔ)+can +動(dòng)詞原形.

　　Before I couldn’t swim. Now I can swim very well.

　�、蹛酆梅矫妫築efore, 主語(yǔ)+didn’t like +名詞 / 動(dòng)詞ing. Now, 主語(yǔ)+like +名詞 /動(dòng)詞ing.

　　Before he didn’t like reading books. Now he likes reading books.

　　點(diǎn)擊查看更多：小學(xué)英語(yǔ)知識(shí)點(diǎn)及練習(xí)

　　奧數(shù)網(wǎng)提醒：

小學(xué)試題、單元測(cè)試題、小學(xué)知識(shí)點(diǎn)

盡在奧數(shù)網(wǎng)公眾號(hào)