Foundationalism falls into straits of solving epistemic regress problem which brings about another main theory directly Coherentism.

It can exchange the real-time data and maintain semantic consistency.

Most researchers in China insist on the use of "three basic principles"(grammatical concord,notional concord,principle of proximity) to cope with students problems in the process of learning,while overseas researchers propose that both the sentence structure and the meaning affect the judgment.

It looks like simple but it must follow the three basic principles of grammatical concord, notional concord and principle of proximity in use.

After reviewing studies on subject-verb agreement by researchers from home and abroad during recent ten years,findings show that researchers of home and abroad deal with the issue of agreement at "language use" level.

Analysis of Error Characteristics on Subject-verb Concord of Chinese Non-English Major Students;

The criteria for judging the true meaning and the false meaning of utterances or parole are (1) the things that exist independent of human consciousness and (2) the intended information speakers or/and writers express, therefore it can be found that there is disagreement in subject-verb concord, negation,and tenses and voices.