“…( All five critical items were created based on the construction "SUBJECT + yīnggāi 'should' + VERB PHRASE+ le 'sentence final particle'," such as (5). The sentences were globally ambiguous because the modal verb yīnggāi "should" was ambiguous between a wide-scope epistemic reading, showing possibility, and a narrow-scope root reading, showing obligation (Lin, 2011(Lin, , 2012Liu & Lee, 2014). Therefore, if the participants were aware of the ambiguity, they were expected to choose choice c. Eighteen control items, such as (6), were created to examine if the participants maintained concentration and were used to decide if the data should be included for further analyses.…”