Question

高一英语选择题!帮忙解释一下!

1.When first _____to the market ,their products enjoyed great success.
A.introducing B.introduced C.introduce D.being introduced
2.Don't use words,expressions or phrarses_____only to people with special knowledge.
A.having been known B.known C.to be know D.being known
答案都是B.说是因为是被动,所以用过去分词,我就想问一下,既然是被动,为什么不是助动词be+动词的过去分词呢??就是说为什么不选D?

Answer 1

1.When first introduced to the market ,their products enjoyed great success.
2.Don't use words,expressions or known only to people with special knowledge.
答案都是B.说是因为是被动,所以用过去分词,我就想问一下,既然是被动,为什么不是助动词be+动词的过去分词呢??就是说为什么不选D?

1.when first introduced 这件事已经发生后，后果是their products enjoyed great success.
when being introduced.不能在前面放first,因为这件事正在发生。后半句得改成 their products were enjoying great success.
2.Don't use words,expressions or known only to people with special knowledge.不要用只有某些人懂的词句。
Being known 正在发生的一件事。前面应该放 sth is or are. sth is now being known to someone=sth is made known to someone now.

Answer 2

过去分词本身表示被动.

Answer 3

being done 是正在进行时的被动
翻译为正在被怎样
用过去分词即表被动又表完成