1.介词短语用作插入语 常作插入语的介词短语有：in fact(事实上),in one’s opinion(在某人看来),of course(当然),above all /first of all (首先),by the way (顺便)等.如： Above all, you must follow your teacher’s advice. As a result, we must water the crop fields. In my opinion, he is an honest boy. 2.副词用作插入语 常作插入语的副词有：certainly(当然),surely(无疑),indeed(的确),however(然而),fortunately(幸运的是),luckily(幸运的是),probably(大概),personally(就个人来讲)等. 如：Unfortunately, I was caught in the rain. Personally, I’d rather go to the opera theatre. Surely, you must finish the task by di3.不定式作插入语 常作插入语的不定式有：to be frank(坦率地说),to tell(you )the truth(老实说),to be sure(当然)等. 如：To tell you the truth, I didn’t want to go with you. 4.V-ing 分词短语作插入语 常作插入语的V-ing分词短语有：generally speaking(一般来讲),generally considering(一般认为),strictly speaking(严格地说),judging from/by (根据……来判断)等. 如：Judging from your accent , you must be from England. Generally speaking, this is a rule for protection our school. 5.分句作插入语 常作插入语的分句有：I think(我认为),I hope (我希望),I’m aftaid(恐怕),What’s more(而且),What’s worse(更糟的是),You see (你清楚)等.如：You see, they didn’t trust me . He will come on time, I think. (注意：这个句子如把插入语I think放在句首,它就成为主句,而后面的句子成为宾语从句成份,即：I think (that )he will come on time.