Slight Correction in 4.4.1

[utsavsinha]

[huangxueqin]

I think you are right，I found the same error。

[NoteBookie]

I find this error too. I thought the writer may misunderstand the Grammer Rule 3 because he made almost the same mistake in 4.4.1(4).

[wangyuxiang0829]

thank you for your clear answer