两道语法，请大家指点！

zjyzzyUID: 2112194

1. The first day in the United States that (put) into effect major( plan )for( the clustering )of government( building) was Washington,D.C.

2. Dolphins are sleek and (powerful) swimmers (that found) in all seas and,unlike porpoises,(have ) well-defined beaklike snouts and conical (teeth).


答案都是B，为什么？是不是因为that的用法？希望能够给我详细解释一下。多谢！

avexUID: 159089

plan - plans

that found - that are found

北国之春UID: 2126658

同意
但是第一句中文什么意思

euge_013UID: 173003

Originally posted by zjyzzy at 2005-11-25 22:14
1. The first day in the United States that (put) into effect major( plan )for( the clustering )of government( building) was Washington,D.C.

2. Dolphins are sleek and (powerful) swimmers (that fo ...

1题中 plan应改为复数形式 因为单数可数名词不能单独存在(在没有冠词的情况下)
2题中 swimmers为定语从句的主语 应该为被动的形式 所以that 指代它 后面应加WAS

zjyzzyUID: 2112194

对不起，第一题前三个单词是the first city  ,不是 the first day

谢谢各位

piaolingloveUID: 197813

改成PLANS,
The first city  in the  United States that put major plans for the clustering of government< buildings> into effect was ``.
put sth into effect.

microcontrolUID: 2104926

可是LZ说的是first day。。。
迷茫