The article reports on a comparative study of the abilities of aphasic speakers and normal control subjects to comprehend and produce verbs and sentences. The analysis is based on test results obtained as part of the standardization procedure for a test battery originally developed for Dutch and since translated and adapted for English and Norwegian. With a few exceptions, there is extensive similarity in the test results between the different languages. The exceptions can be accounted for with reference both to structural differences between the languages and to coincidental aspects of informant selection and scoring procedures. The Norwegian version contains an additional sub-test on past tense inflection, which correlates significantly with at least two other sub-tests in the test battery. (Contains 1 figure and 6 tables.)