句。这几种从句很常见，尤其是从句的开头都有一个明显的标志---疑问词或that。但有一个问题：从句在哪里结束？很多时候因为把从句的结尾找错了，导致整个句子分析失败。有一个很实用的原则：从句中在没有并列从句的情况下一般只能有一个谓语动词或系表结构，所以从句应该在其后的第一个谓语动词和第二个谓语动词之间结束；如果从句中有and等连词，就有可能连接两个谓语动词，那么从句在第二个和第三个谓语动词之间结束，以此类推。种修饰成分全找出来之后，用括号把每个修饰成分括起来，留在括号外面的就是主干．主干一般只有一个谓语动词，它就是当之无愧的谓语了。然后，按照一般顺序，谓语在前，宾语（或表语）在后，这样我们就有了主谓宾（或主系表）的主干结构了．最后把修饰成分按对应的位置加上去，整个句子的结构就把握住了。另外，要注意非谓语动词可以带自己的宾语、状语，也可以有自己的时态和语态。
现在，我们用这种方法分析一个长句子，修饰成分在括号内。
(In the past) our own blocks of flats have been associated with the lower-income groups and they have lacked the obvious provisions, (such as central heating, constant hot water supply, electrically operated lifts from top to bottom, and so on, as well as such details important notwithstanding(然而), as easy facilities for disposal of dust and rubbish and storage places for baby carriages on the ground floor, playgrounds for children on the top of the buildings, and drying grounds for washing.)
A breakthrough(突破)(in the provision of energy from the sun for the European Economic Community(EEC) )could be brought forward (by up to two decades), (if a modest increase could be provided in the EEC’s research effort in this field), (according to senior EEC scientists engaged in experiments in solar energy at EEC’s scientific laboratories at Ispra, near Milan.)
责任编辑:yechenglu
