...0 different sounds, from the common “m” and “a” to the rare clicks of some southern African languages. But why are certain sounds more common than others? A ground-breaking, five-year study shows that diet-related changes in human bite led to new speech sounds that are now found in half the ...
I told her of my experience the night before. We thought it strange that he had not asked for pay. 请问老师,1. 第一句中为何用tell sb of sth ?tell sb of sth 和tell sb (about) sth有何区别?2. 第二句中that引导的句子 “he had not asked for pay”是it的同位语从...