下面就让小编来为大家介绍一下ACT英语必备句子成分吧，大家要好好把握，希望能够给准备参加ACT考试的同学带来帮助。
ACT English必备句子成分，句子成分，顾名思义，就是句子的组成部分。总体来说，英语中的句子成分共有六种，分别如下：
无论是ACT，还是SAT，对句子成分的考察都可谓是细致入微。有些学生认为，学习英语不用注意这些条条框框，仅凭语感即可。对于简单的句子来说，我们或许能够凭感觉予以攻破;然而，有些复杂的句子，倘若不弄清楚句子成分，并理清句子结构，我们是很难道破其中的玄机的。正所谓"细节决定成败"，同学们必须把基本功夯实，才能够在各种考试中所向披靡。
1、主语(Subject)是一个句子中的主体，常由名词、代词或者起同等作用的词语充当，一般置于句首。如：
The sun rises in the east.I love English very much.
Seeing is believing. 眼见为实。
2、谓语(Predicate)用来说明主语的动作或者状态，常由动词充当，位于主语之后。如：
It was raining when she arrived at the airport.
She accepts his proposal at last.
3、宾语(Object)指承担谓语动作的对象，常由名词、代词或者同等作用的词语担任，置于及物动词或者介词之后。如：
She only eats an apple every morning to lose weight.
Our parents love us heart and soul.
He is extremely fond of swimming.
4、补语(Complement)和表语(Predicative)，补语用来对主语和宾语进行补充，以使其意思更加完整，一般主要说明主语或宾语的特征，常由名词或形容词担任。表语即是连系动词(be动词、become等词)后面的主语补语。如：
Jane was declared the champion of the match.(主语Jane的补语)
People consider the plan feasible.(宾语plan的补语)
The young lady is elegant.(表语，表明主语The young lady的特征)
Lucy was a teacher before she came to China.(表语，指出主语Lucy的身份)
5、定语(Attribute)用于限定或者修饰名词或者其他相当于名词作用的词语，常由形容词、相当于形容词的短语或者从句充当。形容词常置于名词之前，其他两种定语则位于名词之后。如：
The young lady picked him up every afternoon.
She has a great desire to travel around the world.
The boy who wears a pair of glasses is Harry Porter.
6、状语(Adverbial)用于修饰动词、形容词、副词乃至整个句子，常由副词或者具有同等作用的短语或从句充当。如：
Lily performed well in the contest.
Honestly, I do not know how to solve this problem.
As time goes by, we have a much better understanding of each other.
有时候，形容词或者过去分词也可以充当状语，如：
Cold and hungry, the little girl died in the night.
Preoccupied with his work, he has no time to care for his family.

更多ACT考试资讯：http://www.onebest.cn/show-139-2894-1.html
官网详情：http://www.onebest.cn/
ACT数学与英语部分分析视频：http://www.56.com/u85/v_MTQwNTczMjk4.html