He works hard.
He sends a letter for her girlfriend every day.
He stays very late every night.
清辅音+s= 读/s/
浊辅音+s=读/z/
元音+s=读/z/
He works hard.
He sends a letter for her girlfriend every day.
He stays very late every night.
清辅音+s= 读/s/
浊辅音+s=读/z/
元音+s=读/z/