namely的同义短语

1. 应该是namely, that is to say, that is三者之间的关系。
2. that's to say和that is在用法上是完全相同的。
3. namely更多时用于列举，但是它要求把例子全部列举完毕。而这和for example和such as就有很大的区别了。for example一般只举一例，而such as一般举多例但不能完全列举。
如：I have three friends, namely, Tom, Jack and Mike.
I have many friends, such as Tom, Jack and Mike.
I have many friends, for example, Tom.
4. that's to say和that is更多用于口语，并不完全限制于列举用途，他们的使用范围比namely要更广泛。

namely的同义短语as follows；hat is； that is to say　
namely 英[ˈneɪmli] 美[ˈnemli]
adv.即，也就是；换句话说；亦即；就是说例句1. The book was inspired by a real person, namely Tamara de Treaux. 那本书的灵感源于一个真实人物，即塔玛拉·德特罗。2. One group of people seems to be forgotten, namely pensioners. 有一类人似乎被遗忘了，就是那些领养老金的人。