Try this: voiced and unvoiced "th" sounds

 

Think about this thing, that thing, and those things.

I have many more sentences like this, if anyone is interested.

所有跟帖： 

• 多谢声姐，我报名，我感兴趣。 -bingli- ♂ (0 bytes) () 04/25/2012 postreply 16:55:54

• sure Sis NewVoice，pleas throw them and I will give it a shot. -sportwoman- ♀ (87 bytes) () 04/25/2012 postreply 16:58:21

• OK， 冰粒，蔓蔓, I will do it. Thanks! -NewVoice- ♀ (0 bytes) () 04/25/2012 postreply 18:32:48