掌握
1.Sentence structure problem
1) Independent clauses (clauses that can be sentences themselves)
Can be joined with comma + conjunction, or semicolon
Comma splice problem: independent clauses joined with ONLY a comma are wrong
Run-on sentence problem: independent clauses joined with nothing, wrong
2) Subordinate/dependent clauses (clauses that needs to latch onto an independent clause, e.g. “Sam is very dirty and needs a bath” – independence clause = Sam is very dirty, dependent clause = needs a bath, conjunction = and)
- often at the beginning/end of a sentence
- test for independent clauses: remove dependent clause, still makes sense
- Sentence fragment problem: several dependent clauses w/ no independent clause
2.Verb problem
1) all verbs should have the same form (to eat/to run, became/attended)
- Nouns describing a group of people (audience, family, USA) are singular
- Either, neither, none, each, anyone, no one, everyone are all singular
- Subjects joined by and are plural (X and Y are)
- Nouns joined by or can be either singular or plural, depending on the last noun given (Jane or John is, Jane or the girls are)
2) proper tense
- Verb tense does not change within a sentence (“In colonial times…did not…knew)
3.Noun problem
1) Subject-verb agreement
4.Pronoun problem (pronoun = word used to rep. a noun, e.g. ‘he’, ‘she’, ‘it’)
1) Agreement
- Everyone must hand in their homework is wrong, since ‘everyone’ is singular
2) Ambiguity
- It should be very clear which noun the pronoun is replacing – “Mary agreed with Martha that her porch” is incorrect since it is not clear whether her is Mary or Martha
3) Usage of right case (subjective/objective)
- Subjective pronoun does something, objective pronoun has things done to it
- I did it – ‘I’ is subjective (doing something), it happened to me – “me” is objective
- Subject pronouns: I/we, you/you, he/they, she/they, it/they, who/who
- Object pronouns: me/us, you/you, him/them, her/them, it/them, whom/whom
- The book belongs to ME, Claire is more creative than I (am).
5.Preposition problem (about, above, across, around, along – used to add info to a sentence)
1) Using different prepositions can change the meaning of a sentence
以上就是这5大SAT语法考试知识点的全部内容，包括了句子结构，动词，名词，代词和介词五个部分，对于难以理解的知识点后面附有例题解说。大家可以在备考自己的SAT语法考试的时候，进行更加深入的了解和掌握。