跟在m后面的B都不发音
climb dumb comb thumb boomb limb
后面跟着t的B通常不发音
debt doubt subtle(subtitle中的b要发音)

dg在一起的时候d不发音
judge hedge pledge grudge dodge
d不发音的其他单词
Wednesday Sandwich handsome

跟在a或o或u后面的l不发音
calm talk walk half would should salmon folk chalk could calf