“以至”与“以致”是一对音同、形近的连词,近年来,这一对连词正呈现出日益趋同的倾向,具体表现为:两者现在都可以连接词和短语,也都可以连接各种语义倾向的因果复句或句组,而且也都可以附加后缀“于”。尚存的细微差异在于:a.“以至”充当组合连词和关联连词的概率相差不大,而“以致”还是以充当关联连词为主;b.表如意或中性义的因果关系时,“以至”明显多于“以致”;c.“以至”能够连接递进和连贯关系的复句,“以致”不能;d.承上启下的“以至于”可以独用,“以致于”没有这样的用法。 “Even ” and “To ” is a pair of similar homophones, in recent years, the pair of conjunctions is showing a tendency to become more and more convergent, as follows: Both are now available conjunctions and phrases , Can also be connected to a variety of semantic orientation of the causal complex sentence or sentence group, but also can be attached to the suffix “in ”. The subtle differences between survivors are: a. “Even ” has the same or lower probability of combining conjunctions and related conjunctions, and “so ” or act as an associative conjunction; b. Causal or neutral causal Relation “,” even “is obviously more than” cause “; c.” Even “can connect progressive and coherent complex sentences,” can not “; d. ”You can use it alone," so there is no such usage.