高二英語知識點：Astronomy the science of the stars

一．高二英語必修三astronomy the science of the stars語法要點

主語從句：在復(fù)合句中作主句的主語的從句叫主語從句。引導(dǎo)主語從句的詞有連詞that, whether;連接代詞who, what, which;連接副詞when, where, how, why等。 Eg: Which team will win the match is still unknown.

主語從句放在句首，句子常顯得笨重，因此一般把它放到句子后面，前面用引導(dǎo)詞”it”來作主語。

Eg: It’s strange that he didn’t come yesterday.

二．高二英語必修三astronomy the science of the stars重點難點

1.Nobody knew that it was going to be different from other planets going to be different from other planets going round the sun.

going round the sun 為現(xiàn)在分詞短語定語，表示一般的動作。 Eg: Men breaking the law will be punished. 現(xiàn)在分詞短語，也可表示進(jìn)行的動作

2. Weather life will continue on the earth for millions of years to come will depend on whether this problem can be solved.

for millions of years to come 中不定式to come 作定語，與前面的名詞有邏輯上的主謂關(guān)系。

Eg: She is the last person to tell lies.

3.The problem was that the earth became violent because it was not clear whether the solid shape was to last or not.

The problem was that …, that 引導(dǎo)表語從句，that 只起連接作用，無意義，但不能省略。 Eg: The trouble is that we are short of money.

4.As the earth cooled down, water began to appear on its surface.

as conj. 隨著，在…期間;由于，因為;盡管，即使;當(dāng)…的時候;像…一樣 5. That made it possible for life to begin to develop.

it 是形式主語，真正的主語是不定式to begin to develop. Eg: He thinks it’s his duty to help others.

三．高二英語必修三astronomy the science of the stars功能句型

指示(Introductions)

Please look at/ listen to … Please pay attention to ... Please check that … Make sure you … Don’t forget to … Watch out for … You need … You’d better … You must/mustn’t … 四. 重點單詞及短語 單詞 ① atmosphere n. 大氣，空氣，氣氛 a friendly atmosphere 友好的氣氛 atmospheric adj. 大氣的，有氣氛的 ② violent adj. 劇烈的，厲害的;(人)暴戾的;(感情、言語)激昂的，激烈的 violence n. 劇烈，暴行

violently adv. 激烈地，粗暴地 ③ solid adj. n. 固體的;實質(zhì)的;純粹的;結(jié)實賓;牢靠的，穩(wěn)固的 ④ explode vt. vi. 爆炸，使爆炸;感情爆發(fā);駁倒，推翻 explosion n. 爆發(fā)，爆炸

explosive adj. 爆炸性的，爆發(fā)性的 ⑤ surface n. 外表，表面;adj. 表面的，外表的;vt. vi. 浮出水面，給…裝上表面 ⑥ dissolve vt. vi. 使溶解，溶解;解散，消除，解除 dissolution n. 解散，溶解 ⑦ harmful adj. 有害的 harm n. v. 危害，傷害 harmless adj. 無害的

harmlessness n. 無害，無惡意，天真無邪 harmfully adv. 有害地 harmlessly adv. 無害地 ⑧ spread vt. vi. n. (使)張開，伸展，擴(kuò)張;涂;散布，傳播;(使)蔓延 ⑨ exist vi. 在，存在，生存

existence n. 存在;生活，生存 ⑩ mass n. 團(tuán)，塊，堆，眾多，大量;pl. 群眾，民眾;質(zhì)量 短語

in time 遲早，最后 in time for sth./to do sth. 及時，不遲

prevent … from 阻止某人做某事(from 有時可省略，但在被動說現(xiàn)語態(tài)中不能省) depend on/up sth. 依靠，指望;相信;取決于 cheer up 使某人高興或更快樂 now that 既然，由于

break out 突然發(fā)生，逃出某地

make sense of … 理解，弄懂，有道理，有意義，理智的