Conversation calls for a willingness to alternate the role of speaker with that of listener， and it calls for occasional “digestive pauses” by both.这里that指代前面的the role.
No bread eaten by men is so sweet as that earned by his own labor.
A good writer is who can express the commonplace in an uncommon way.
[A] that [B]he [C]one [D]this
For him to be re-elected， what is essential is not that his policy works ， but that the public believe that it does.
Each cigarette a person smokes does some harm， and eventually he may get a serious disease form its effect.
It was during the 1920"s that the friendship between the two American writers Hemingway and Fitzgerald reached its highest point.
Our department was monitored by two supervisors， Bill and me.
由either … or， neither…nor， not only…but (also)连接先行词时候，如果两个先行词在数和性上保持一致，就用其相应的一直的人称代词;如果两个先行词在数或性上不一致，人称代词一般与邻近的先行词在数和性上保持一致。
Neither Mary nor Alice has her key with her.
Neither the package nor the letters have reached their destination
If either David or Janet comes ， he or she will want a drink
2.当each， everyone， everybody， no one ，none ，anybody， someone， somebody用作主语或主语的限定词时候，或者anything， nothing， something everything等不定代词作主语时候，其相应的代词一般按照语法一致原则，采取单数形式。如：
Everybody talked at the top of his voice.
None of the boys can do it ， can he?
Everything is ready， isn"t it“
They each have two coats
we are each responsible for his own family
如：the tourist and businessmen lost their luggage in the accident