1.That partically all Americans already must have what in effect is a national ID.整句为宾语从句.
2.(have) What in effect is a national ID.又一个宾语从句.(what是主语,is a national ID是谓语,遵循宾从中的主谓结构.)
3.what in effect(is a …)主语从句.
1.That partically all Americans already must have what in effect is a national ID.整句为宾语从句.
2.(have) What in effect is a national ID.又一个宾语从句.(what是主语,is a national ID是谓语,遵循宾从中的主谓结构.)
3.what in effect(is a …)主语从句.