关于英语插入语的问题

可以做：
副词,
Surely， she won�t go to China Telecom with you（Surely）
形容词或其短语,
Strange to say (或True)， he should have done such a thing.（Strange to say (或True））
介词短语,Of course， he did not succeed for the lack of experience.（Of course）
分词短语�,
Judging from his letter， a campaign against“white pollution”has been underta ken in his hometown.（Judging from his letter）
不定式短语,
To be sure， community service can aid re�employment.�（To be sure）
句子
One day， it is said， Newton saw an apple fall from a tree.（it is said）
括号里的为插入成分……

要掌握插入语一定记住一点，插入语在句中不做成分可省略。