Question

想问问几个句子的成分分析

Scinentists believe that someday one-man submarines will be as popular as automobiles are today.这个句子是什么从句啊??为什么?
还有,For many people,Christmas means traveling long distance to be with their families.这又是什么从句??因为我语法很差,请高手详答!!!
能再详细点吗??

Answer 1

1."someday one-man submarines will be as popular as automobiles are today"是宾语从句,因为believe是动词,动词后要跟宾语,that是宾语从句的引导词.
在这个宾语从句中,又有一个状语从句"as automobiles are".在as+形容词+as的句式中,第一个 as 是介词,第二个as是连词,连接句子automobiles are,意思是像今天的汽车一样流行.
2.此句中没有从句,有没有从句主要是看是看除了主句的谓语动词外,还有没有其他动词做谓语,这一句只有means这个动词做谓语. "traveling long distance"是一个动名词短语,而"to be with their families"是动词不定式做目的状语.
动名词和动词不定式都是非谓语动词.

Answer 2

1.automobiles are popular today
2.someday one-man submarines will be as popular as automobiles are (popular)
3.Scinentists believe that ...（从句2）.

to be with their families是状语

Answer 3

第一句是宾语从句。
第二句也是。

Answer 4

第一、二句是宾语从句，believe和means后面的成分是宾语，而在这个句子中宾语是一个句子，所以是宾语从句。