Using "to" To Express Purpose
- Using "to" expresses purpose and shows why an action is done.
- "In order to" and "so as to" can also express purpose, often in more formal contexts.
- "In order not to" and "so as not to" are used to express purpose while avoiding a negative outcome.
Understanding how to express purpose in English is key to making your intentions clear. This lesson focuses on different ways to convey why something is done, using "to", "in order to", "in order not to", "so as to", and "so as not to".
Expressing Purpose with "to"
Using "to" is the most common way to express purpose in English. It's simple and straightforward, showing the reason behind an action.
Grammar Rule: Subject + verb + "to" + base form of the verb.
Examples:
-
I came here to buy something.
Subject ("I") + verb ("came") + "to" + base form of the verb ("buy") + object ("something").
-
She studies hard to pass the exam.
Subject ("She") + verb ("studies") + "to" + base form of the verb ("pass") + object ("the exam").
Using "in order to" and "so as to"
Both "in order to" and "so as to" are more formal than simply using "to", and they serve the same purpose: to explain the reason for an action. "In order to" is used more often than "so as to" in everyday conversation.
Grammar Rule: Subject + verb (+ other words) + "in order to" ("so as to") + base form of the verb.
You can place "in order to ..." at the beginning of the sentence, too. In that case, add a comma (,) after the last word of the "in order to" clause.
Examples:
-
He wakes up early in order to catch the train.
Subject ("He") + verb ("wakes up") + "in order to" + base form of the verb ("catch").
-
They saved money so as to buy a new house.
Subject ("They") + verb ("saved") + "so as to" + base form of the verb ("buy").
Expressing Negative Purpose: "in order not to" and "so as not to"
To express purpose while specifically wanting to avoid a negative outcome, use "in order not to" or "so as not to".
Grammar Rule: Subject + verb + "in order not to" ("so as not to") + base form of the verb.
Examples:
-
She speaks softly in order not to wake the baby.
Subject ("She") + verb ("speaks") + "in order not to" + base form of the verb ("wake").
-
He turned down the music so as not to disturb the neighbors.
Subject ("He") + verb ("turned down") + "so as not to" + base form of the verb ("disturb").
和AI英语老师一起练习这个话题
AI英语老师会教您语法，并以对话的形式和您一起练习。 另外，还有 100 多个有关该主题的练习题来巩固您的理解。
在您的手机或平板电脑上免费试用 ALULA
你对这节课有任何问题吗？请在下面的评论区提问。