使用定语从句,将下列两个句子合并成一句1,She lost an English book.Its cover is dark blue.2,He has a penfriend.He's never seen her3,This is the way of life .She is looking forward to this way of life.改错．1,She moved to an old house her parents left it to her2,Do you know the girl who often help her classmates?3I'll do all what I can to help you.

1.She lost an English book the cover of which is dark blue.
2.He has a penfriend whom he has never seen.
3.This is the way of life which she is looking forward.
改错
1.She moved to an old house which her parents left to her.
which 已经指代房子，it多余了。
2.Do you know the girl who often helps her classmates? help加个s
3.I'll do all what I can do to help you. what是宾语，本句缺个宾语的动词do，意思是do what,或者what I can do.

1. She lost an English book whose cover is dark blue.
2. He has a penfriend who he's never seen.
3. This is the way of life which she is looking forward to.
改错：
1. 去掉it.这是一个定语从句。先行词做宾语省略关系词的情况。其中it就是an old house所以去掉。
2. help-helps。第三人称单数。
3.what-that或者去掉what.也是一个定语从句，先行词受到all修饰只能用that做关系词。又因为先行词在句中作宾语可以省略。

1.She lost an English book whose cover is dark blue.
2.He has a penfriend whom he has never seen.
3.This is the way of life which she is looking forward to.
1.去掉it,这句话是定语从句,完整的应该是She moved to an old house which/that her parents left to her.定语从句中当关系代词在从句中作宾语时,可以省略.
2.help变为helps.定语从句中who指代的是the girl,所以从句中的谓语动词应该用单三.
3.变what为that,或者将all去掉.all that就等于what.
可以保证百分之百的正确率~

She lost an English book whose cover is dark blue.
He has a penfriend who has never be seen by him.
This is the way of life to which she is looking forward.
改错
1去掉it
2helps单三形式
3what I can do to help you