inthisafternoon和thisafternoon的区别是什么答:this afternoon前面不能加介词in一般情况下,时间状语前不用介词的五种情况:1. today, yesterday, tomorrow 或后加 morning, afternoon, evening 时;2.this, that, these, those构成的时间短语前;3. last, next构成的时间短语前;4. every, each, all, some, any构成的时间短语前;5. “for+...