What Does "so as to" Mean?
- Grammatical function: "So as to" is a subordinating conjunction used to express purpose or intention. It links an action to its intended goal or result.
- Typical sentence position: It is most commonly found in the medial position (connecting two clauses), though it can occasionally appear in the initial position for stylistic emphasis.
- Register: This expression is generally considered formal or neutral. It is frequently used in academic, technical, and professional writing to provide a more sophisticated alternative to the simple "to" or "in order to."
How to Use It
- Syntactic patterns: The expression must always be followed by the base form of a verb (the infinitive). It is preceded by a main clause that describes an action taken toward a specific end.
- Punctuation rules: Generally, no comma is required before "so as to" when it appears in the middle of a sentence. If used at the beginning of a sentence to emphasize the purpose, a comma should follow the entire introductory purpose phrase.
- Grammatical flexibility: It can be negated by placing "not" between "as" and "to" (so as not to). While it can start a sentence, doing so is less common than mid-sentence placement.
- What sounds unnatural: Using "so as to" with a full subject and conjugated verb (e.g., "so as to he could win") is grammatically incorrect.
Real-World Examples
These examples are sourced from so as to on Ludwig.guru.
"So as to prevent pandemonium?" — newyorker.com
"So as not to have regrets." — newyorker.com
""So as to choose," she replies." — newyorker.com
"So as not to kill people." — newyorker.com
"And we did so as a team." — nytimes.com
Examples sourced from https://ludwig.guru/s/so+as+to
Similar Phrases and Alternatives
| Phrase |
Context |
| in order to |
The most direct synonym; slightly more common in formal writing. |
| to |
The simplest and most common way to express purpose in neutral or informal speech. |
| with the aim of |
Formal; followed by a gerund (-ing form) rather than an infinitive. |
| so that |
Used when the subject of the purpose clause is different from the main clause. |
| for the purpose of |
Highly formal and wordy; used in legal or technical documentation. |
Common Mistakes
- The Finite Clause Error: Learners often mistakenly follow it with a finite clause (e.g., 'so as to he could') instead of the required base form of the verb (infinitive). Always use the bare infinitive after the "to."
- Confusion with "So That": Do not use "so as to" when you need to introduce a new subject. For example, "I spoke loudly so as to everyone could hear" is incorrect; use "so that" in this instance.
- Redundancy: In very informal settings, "so as to" can sound overly stiff. Using a simple "to" is often sufficient for clarity.
Quick-Reference Summary
| Expression |
Function |
Register |
Typical Position |
| so as to |
Purpose/Intention |
Formal/Neutral |
Medial |
FAQs
Can I use so as to at the beginning of a sentence
Yes, so as to can appear in the sentence-initial position to place emphasis on the purpose of an action. When doing so, ensure the entire purpose phrase is followed by a comma before the main clause begins.
How does so as to differ from in order to
Both expressions are functionally identical and carry a formal register, but so as to is often perceived as slightly more stylistic or literary. While in order to is more common in technical prose, both require the infinitive form of the verb.
What is the most common grammatical error when using this phrase
Learners often mistakenly follow it with a finite clause (e.g., 'so as to he could') instead of the required base form of the verb. You must always use the infinitive after so as to, such as "so as to avoid" rather than "so as to he avoids."