consult"的含义之一是：go to a book,etc.for information,etc.即"查阅书籍等以获得信息等".在使用及物动词consult造句时,其宾语一般是dictionary,book,magazine,telephone directory,encyclopaedia,map,railway guide等名词(或短语),而不是word,phrase等名词.后者只能出现在由介词for引出的目的状语中.因此,"to consult a word in a dictio- nary"应改为"to consult a dictionary for a word".
补充回答："look up"的含义之一是：to try to find something in a dictionary or other reference,即"试图在词典或其它参考书中查找某信息".用look up造句时,其宾语应当是需要查找的某种信息,如word, phrase,idiom,slang,proverb,phone number,place name等名词(或短语).而dictionary,book,map,telephone directory, railway guide等名词(或短语)一般出现在用作地点状语的介词短语中.不可以将consult与look up混淆.为避免误用,不妨牢记这两种句式： To consult a dictionary,etc.for a word,etc. To look up a word,etc.in a dictionary,etc.