Based on a review of research, the most common syntactic errors made by native Arabic-speaking learners of English as a second language are discussed. Seven categories of error are distinguished and described: verbal errors (use of tense, phase, aspect, voice, verb formation, concord, finite/non-finite verbs); relative clauses (interlingual and intralingual errors, structural misrepresentation, simplification); adverbial clauses (comparison, purpose, result, concession, manner); sentence structure; articles (definite and indefinite); prepositions (deletion, substitution, redundancy); and conjunctions. It is concluded that most common source of error is the influence of the native language, and that in processing English syntactic structures, Arabic speakers adopt certain strategies similar to those of first-language learners, including simplification and overgeneralization. Contains 52 references. (MSE)