由every,each 或no 所引介的单数主词必须搭配动词单数形式使用,即使以and 连接几个这种主词,也要搭配动词单数形式使用。 不定代名词another, each, either, neither 及one也要搭配动词单数形式使用。 例如:
No student graduates without having submitted an acceptable thesis．
Every paper, report, and letter is stored in this computer．
Neither of these methods is truly effective．
即使单数主词后面紧跟着以as well as, together with, along with, in addition to 开头的片语,片语中包含其他名词,其后搭配的动词仍然维持单数形式。 例如:
The growth in the economy together with the stable political situation has led to a significant increase in GDP．(主词是growth)(www.xing528.com)
One of the advantages of this approach is that it is extremely simple．(主词是one)
动词的数必须符合主词的数,但是与补语的数无关。 例如,在下面的句子中,补语是复数,但是动词仍为单数形式。 例如:
误:The nominal sensitivity were 200 and 270 mV/mil for 3030 steel and stainless steel,respectively．
正:The nominal sensitivity was 200 mV/mil for 3030 steel and 270 mV/mil for stainless steel．
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