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t to open on Sundays. 過去這家商店星期天不營業(yè)。 ? 美式英語通常用 A種形式,英式英語常用 B種形式。 ? (二 )否定句式: ? A)主語 +did not use to+動詞原形 …… ? B)主語 +used not to+動詞原形 …… ? 第一種否定句型,就是把 used當(dāng)做實義動詞來看,所以變否定句要用助動詞did。Unit 4 I used to be afraid of the dark. Period 2 Review Used to … I used to ride a bike. Now I take a bus. short tall He used to …, but now he … straight hair curly hair long hair short hair shy outgoing Skim the article and identify the paragraphs in which the following information app