Unit 4 Astronomy：The science of the stars
unit 4 astronomy：the science of the stars
1. spread
vt.&vi. 展開,鋪開;散布;擴大;延伸
the bird spread its wings. 那只鳥展開了翅膀。
flies spread disease. 蒼蠅傳播疾病。
常用結構:
spread sth. with sth. 用……抹/涂/鋪……
spread ...on ...把……抹/涂/鋪在……
be spread for擺好（桌子）準備
spread oneself\[口\]舒展四肢(躺下)
spread out張開，伸開，鋪開，展開，伸長
高手過招
單項填空
paper making began in china and to europe.
(•12•河南鄭州檢測)
a. spread b. grew
c. carried d. developed
解析:選a。句意為：造紙術起源于中國，又傳播到了歐洲。spread傳播。
2. method
n. 方法
he has introduced a new method of teaching.
他引進了一種新的教學方法。
what is the most effective method of birth control?
控制出生率的最有效的方法是什么？
聯想拓展
by this means=in this way=with this method
用這種方法
易混辨析
method/means
method側重“理論方法”，指做某事的具體步驟或程序。
a new teaching method一種新的教學方法
means（單復數同形）側重“通過手段”或“利用工具”去達到某種目的。
高手過招
選詞填空(method/means)（原創）
①the quickest of travel is by plane.
②she has a very scientific of dealing with political problems.
答案：①means②method
3. harmful
adj. 有害的
常用結構:
do sb. harm/do harm to sb. 對某人有害
mean no harm 無意傷害別人;沒有惡意
harm one’s image/reputation 損害某人的形象/名聲
do more harm than good 弊大于利
there is no harm in (sb.s) doing sth.
=it does no harm (for sb.) to do sth. (某人) 做某事無害處
be harmful to 對……有害
harm n.&v. 損害，傷害
smoking is harmful to your health. 吸煙有害健康。
高手過招
單項填空
he is a nice dog. he won’t do you any .（原創）
a. ill b. bite c. hurt d. harm
解析:選d。考查固定搭配。do sb. harm/do harm to sb. 表示
“對某人有害”。句意為：這是一條溫順的狗，它不會傷害你。
故選d。
4. mass
n. 質量；團；塊；大量；(前加the) 群眾
a liter of gas has less mass than a liter of water.