语法大全补充140

lindawen1

a 和d的区别在哪里？ d 为什么不对? that is known 有问题吗？ 都对但a更简洁

a里面，Mars后面的a planet now known to be 是什么结构？同位语？独立主格？还是状语补充？同位语

again venture to Mars 和venture again to Mars,个人觉得都可以的。理解错吗？没错，就当是一样的

综上所述，是否a,比d更加简洁？

(A) again venture to Mars, a planet now known to be
(D) venture again to Mars, a planet that is known now to be

evonneangela

我觉得应该这样理解:

句子中:It may be another fifteen years before spacecraft from Earth again venture to Mars...

实际上应该是before spacecraft venture to Mars from Earth again.原句中将"from Earth again"强调提前,使得"again"看起来用得很奇怪.

不知道这样想对不对??

wuwu717

Why no "s" after "venture" for the singular noun "spacecraft"?

wanjing119

know somebody/something to be something

shanexwang

Some nouns have
          the same form in the singular and the plural.

    

Examples:

    
                
                
            
            
                
                
            
            
                
                
            
            
                
                
            
            
                
                

Singular	Plural
sheep	sheep
fish	fish
species	species
aircraft	aircraft

batmanhm

是不是可以这样理解？

A是又一次来自地球的飞船去火星

D是来自地球的飞船又一次去火星（隐含指和上次同样的飞船）

欢迎讨论

yinlixiao

kankan

starquake

个人感觉now的修饰关系是本题的考点之一。

D中的now到底是修饰known还是to be,是不清晰的。

再加上known to be的用法，可以确定A是正确答案。

snyouth

1 ▶HAVE INFORMATION◀ [intransitive,transitive not in progressive]to have information about something
be known to do something  Smoking is known to increase a person's risk of developing lung cancer.
6▶KNOW SOMEBODY'S QUALITIES◀
[transitive not in progressive] to think that someone has particular qualities
know somebody as something
I knew him as a hard-working, modest, and honest politician.
know somebody for something
In fact, I knew her for a tough-minded young woman.

wentaow2008

 多谢楼上的语法点～新年快乐！