Astronomy教案

she is the last person to do such a thing. 她是最不像做這種事的人。【高考鏈接】主語從句一、由what（whatever，whoever）等代詞引導的主語從句。what they are after is money.  他們追求的是金錢。whatever was said here must be kept secret.  這里說的話都應當保密。二、由連詞that引導的主語從句。其中that一般不可省略，但若用it作形式主語， that從句后置時，則可省略。為避免頭重腳輕，我們傾向用it開頭，后接be，seem等。如果句子是疑問形式，就只能用帶it的結構。that money doesn't grow on trees should be obvious.金錢不能從樹上長出來是顯而易見的。it is obvious（that）money doesn't grow on trees .顯而易見，金錢是不能從樹上長出來的。has it been announced when the planes are to take off？飛機什么時候起飛宣布了沒有？注意：1）選用what還是用that引導主語從句要根據關聯詞在從句中是否擔任成分而定。且what（以及whatever，whoever等）引導的主語從句一般不用it作形式主語。what he said is true.他說的是真的。（what在其引導的主語從句中作賓語。）that china is a great socialist country is well known.（=it’s well known that…）眾所周知，中國是一個偉大的社會主義國家。（that在其引導的主語從句中不作任何成分，也無詞義，只起連接作用。）2）it引導的強調句與it作形式主語的復合句不可混淆。it引導的強調句是用來對句中某一成分加以強調，其結構為：“it is（或was）+強調部分+that（或who）…”強調句去掉it is（或was）…that（或who）…框架后，剩余部分為一個完整的句子。it was i that(who) met mary in the street yesterday.是我昨天在街上遇見了瑪麗。(強調主語)3）常見的用it作形式主語的復合句結構：*it is+形容詞（necessary，strange，important，wonderful，possible，likely，等）+that從句，從句中常用虛擬語氣。it’s necessary that he write something in english.他用英語寫點東西是必要的。it’s strange that she did not go to school yesterday.奇怪的是她昨天沒去上學。*it is+名詞（a fact，a pity ，no  wonder，good news，等）+that從句it's a pity that she should have said so.真遺憾她竟然會這么說。*it is+過去分詞（said，reported，decided，unknown等）+that從句its said that our english teacher will go abroad next week.據說我們英語老師下周要去出國。*it +不及物動詞（seems，appears，happens， matters等）+that從句it seems that she is in great need of help.看來她急幫忙。4）主語為從句時，一般要用單數謂語動詞形式；但如果引導的從句作主語、代表復數概念（�？蓮谋碚Z上看出）時，謂語動詞則常用復數形式：what we need is water.  我們需要的是水。what we need are useful books. 我們需要的是有用的書。三、由連接代詞或連接副詞（或if, whether）引導的主語從句。when they will come hasn't been made public.他們什么時候回來還沒有宣布。whether i’ll attend the meeting hasn’t been decided.=it hasn’t been decided whether(if) i’ll attend the meeting.我是否參加會議還未決定。