试题题干
Rewrite the following sentences as required
Using a relative clause:
My special gratitude goes to Professor Smith. Without his help the thesis would have been impossible.
参考答案
试题解析
relative clause关系分句，常被定义为名词或名词短语的分句式修饰。本题中前后两句话之间用逗号隔开，并且从后面的名词可知本题中有形容词性物主代词，所以用without whose。