The science of the stars

noun clause main verb 
b. as the object
nobody  knows   how he got involved in gangland activities
  verb noun clause
c. as the complement of the verb "to be" or predicative
what we are worried about is that he may have another heart attack.
the question is why they could escape through the front door when there were so many guards there.
find the noun clauses in the following sentences and tell how they are used. (subject, predicate nominative, direct object, appositive, indirect object, or object of the preposition)
1. how the prisoner escaped is a mystery.
2. my feeling is that the robbery was an inside job.
3. everyone is wondering how he could just disappear.
4. the news that he had escaped frightened the whole town.
5. the police have offered whoever finds the stolen diamonds a reward.
6. the family has had no word about where he might be.
7. that we were ready to go was a miracle.
8. give whoever wants to go a ride to the game.
9. that you are losing ground was evident from the polls.
10. whoever injured the handicapped woman must be feeling guilty.
keys:
1. how the prisoner escaped →subject
2. that the robbery was an inside job → predicate nominative
3. how he could just disappear → direct object
4. that  he had escaped →  appositive
5. whoever finds the stolen diamonds → indirect object
6. where he might be → object of the preposition
7. that we were ready to go → subject
8. whoever wants to go →  indirect object
9. that you are losing ground → subject
10. whoever injured the handicapped woman → subject
3. 學習主語從句
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。）