Many students of English have trouble knowing when to use like and when to use as. What is the difference between these two words?
The rule about like and as has several different parts. That's why like and as can be difficult for students to use properly. Understanding the rule is absolutely essential, because if you mix up the words it's considered quite a big mistake. Most of the time, anyway.
Technically, like and as are not interchangeable. This means that in some situations you have to use one, and in some situations you need to use the other. However, there is one part of the rule that is often broken by native English speakers when they talk. How confusing!
Let's look at some examples to help you understand the difference.
Like, of course, is normally a verb that means to enjoy. However, this is not the part of the rule that students find difficult!
In addition to its use as a verb, grammatically, the word like can be a preposition. This means it is a word that connects two nouns. Like means that two things are similar. For example, we can say, "Kelly is like her mother" and "American football is like rugby".
The first sentence means that Kelly and her mother are similar, while the second sentence means that American football is similar to rugby. The word likewise comes from this definition of like. Likewise is an adverb that means in the same way.
We can modify like with words such as"very,""just," "extremely,""quite" and other adverbs of degree if we want to be more specific. The sentence"Kelly is just like her mother" means that Kelly is extremely similar to her mother. It is also common to use like in collocations such as look like, sound like, feel like, smell like and seem like. These expressions mean look similar to, sound similar to, feel similar to, etc.
Now let's move on to the next part of the rule.
Like is also used to introduce examples. We say,"Spain is famous for foods like paella, tapas and ham" because paella, tapas and ham are examples of famous Spanish foods. Students sometimes make sentences such as, "Spain is famous for foods as paella, tapas and ham," but this is incorrect.
However, when we use like to introduce examples it is also possible to use such as. So, we can make the sentence,"Spain is famous for foods such as paella, tapas and ham" and it means the same as using like.
As is also used to express similarity, but in a different way from like. Grammatically, the word as is a conjunction. This means that as connects parts of sentences, or clauses (a combination of a noun and a verb). An example of this point is the sentence, "In Colombia people speak Spanish, as they do in Peru. "As is required here because the combination"they do" is a clause. A similar example is the sentence,"Spinach is very healthy, as most green vegetables are. "As is needed because"green vegetables are" is also a clause.
Technically, in sentences like the ones above it is not possible to use like. However, in spoken English, many people use like anyway. They are breaking the rule, but it happens so often that sometimes people do not even notice! As a non-native English speaker, in formal situations you should always use as. In informal situations, both like and as are OK. In writing, you should always use as.
A second use of as is to talk about roles. Examples of roles are characteristics like vegetarian, Catholic, mother, father, student, French person, man and woman. You can think of a role as something important about you. When we describe a person's role, we have to use as, not like. This use comes up most frequently with jobs. For example, you should say,"I work as a secretary," not" I work like a secretary."
Sometimes, both like and as are possible, but the meaning of the sentence changes depending on what word you choose. If I say"As your mother, I believe…" it means that the person is really your mother. (Being a mother is her role.) If I say"Like your mother, I believe…" it means that the person is not your mother, but is similar to your mother in that she shares her opinion.
A final use of as is to mean because. For example, you can make the sentence"I am not going out tonight, as it's very late." Keep in mind that it is only possible to use as as a replacement for because if the speaker is sharing information that is obvious or already known to the listener.
Lucy and Isabel are sisters. They look a lot like each other and they sound like each other too. They even like doing similar things, like riding their bicycles and reading magazines. As a result of this, people sometimes mix them up. But Lucy and Isabel don't mind, as they know people can't really help it.
The main difference between the two sisters is their jobs. Lucy works as a doctor whereas Isabel works as a dentist. In her job, Lucy does things like prescribe medicine, take blood and check patients' temperatures. She also takes care of people, which she likes to do. Isabel takes care of people too, but mostly in her job she does things like clean teeth and help people who need braces or have cavities.
When Isabel needs a doctor, she visits Lucy. Likewise, when Lucy needs a dentist, she visits Isabel. The two sisters like visiting each other even when they are not sick, as spending time together makes them feel better. Who wouldn't like visiting someone who you are so much like?
Answer the following 10 questions and then check your answers. Each question is worth 10 points.
Part 1: 1. D | 2. C | 3. A | 4. BPart 2: 1. B | 2. A | 3. C | 4. B| 5. D | 6. A