【金版学案】人教版英语单元复习课件（自主学习+即学即练）：必修3Unit4.ppt

Unit 4　Astronomy：the science of the stars ;1．How life began on earth is one of the biggest puzzles that scientists found hard to solve.(p.27) 地球生命如何起源是科学家们觉得很难解决的最大的难题之一。;?词语归纳 puzzle vt.使迷惑；使为难，使窘困；感到迷惑 n．(游戏的)猜谜；难题；谜 puzzle over/about sth.苦苦思索；仔细琢磨…… puzzle sth.out 琢磨出……的答案 a puzzle to sb.某人不懂;puzzled adj.迷惑不解的(常用来修饰人) be puzzled about 对……迷惑 puzzling adj.令人迷惑不解的(常用来修饰事物) ;用puzzle的相关词语完成下列小片段。 Her (1)________look showed that she (2)_________what he said.Yes，It was really a (3)________because it was (4)________that he would rather throw away the food than give it to those in need.What he said as well as what he did (5)________all the people present.;2．Water had also appeared on other planets like Mars but，unlike the earth，it had disappeared later.(p.26) 其他行星上???比如在火星上，也曾经有水。然而和地球不同的是，火星上的水后来消失了。 unlike prep.与……不同，不像 He is unlike his brother who is much fatter. 他不像比他胖得多的哥哥。;?温馨提示：like 作动词时意为“喜欢”，其反义词是dislike(不喜欢)。like 作介词时意为“像……一样”，其反义词是unlike(不像)。;用like的相关词语填空。 Tom looks (1) _____his mother，but (2)______his mother who likes music，Tom (3)_____ music .Instead，he (4) _____football very much.;3．They multiplied and filled the oceans and seas with oxygen，which encouraged the later development of early shellfish and all sorts of fish.(p.26) 他们繁殖起来就使得早期的海洋充满了氧气，这为早期的贝类及其各种鱼类的发育进一步创造了条件。;?词语归纳 encourage sb.to do sth.鼓励某人做某事 urge sb.to do sth.鼓励某人做，怂恿某人做 Children should be encouraged/urged to be independent thinkers. 应鼓励孩子们成为独立思考者。 ; (1)父亲总是鼓励我学好英语。 _____________________________________________ (2)老师鼓励我报名参加演讲比赛。 ________________________________________________________________________;4．Before we left，Li Yanping explained to me that the force of gravity would change three times on our journey...(p.30) 在启程之前，李彦平向我解释说，在我们的航行中会有三次重力的改变。;?探究学习;?词语归纳 force open 强行打开 by force 依靠武力 force sb.to do sth.迫使……做 come into force (法律)实施 force sb.into doing sth.迫使……做 in force 大批的 force ones way 强行前进或进入 force sth.on sb.把……强加于……;选用上述短语完成下列小片段。 It was reported that two peasant workers (1)______