(2) Post-test: Post-test is used to test the subjects’ grammatical competence after the experiment. The testing paper
for the post-test includes 50 multiple choices with a full mark of 100. If the student gets one of them correct, he/she
will get 2 marks. Otherwise, he/she will get 0. The contents of the testing paper include the following grammatical
items: No.1-10 are to test the subjects’ imperatives; No.11-20 are to test the subjects’ passive voice; No.21-30 are to
test the subjects’ attributive clause; No.31-40 are to test the subjects’ non-finite verbs; No.41-50 are to test the
subjects’ subjunctive mood.