Unit6 When was it invented.pdf

1、人教版九年级下册英语思维导图1.by accident 偶然地；意外地2.without doubt 毫无疑问的；的确3.by mistake 错误地4.look up to 钦佩；仰慕5.take place 发生；出现6.all of a sudden 突然；猛地7.divideinto 把分成.8.the Olympics 奥林匹克运动会9.the style of 的样式10.be used for 被用于1.被动语态表示句子的主语是谓语动词所表示的动作承受者。短语2.被动语态基本结构：be+及物动词的过去分词被动语态中的be 是助动词，有人称、数和时态的变化。一般现在时的被动语态为：

2、am/is/are+过去分词一般过去时的被动语态为：was/were+过去分词A lot of trees were planted here last year.一般过去时的被动语态Unit6 When was it invented?1.invent v.发明 inventor n.发明家 invention n.发明2.be used for doing 用来做 （是被动语态）（这个短语的考点有两点，一是used for的意思，二是for后面用动名词）Pens are used for writing.笔是用来写的。详解3.给某人某样东西 give sth.to sb.I gave a pen to him.我给他一支笔。give sb.sth.I gave him a pen.我给他一支笔。