Sau giờ học, Lan thường ngồi ở một quán nhỏ để làm bài tập.

Vietnamese often puts time expressions near the beginning of the sentence to set the scene first.

So:

Sau giờ học, Lan thường ngồi ở một quán nhỏ để làm bài tập.

is a very natural structure:

• Sau giờ học = time
• Lan = subject
• thường ngồi = usually sits
• ở một quán nhỏ = at a small café/shop
• để làm bài tập = to do homework

The comma after Sau giờ học works like it does in English after a fronted time phrase such as After class, ...

It can often be understood as after class or after school, depending on context.

Breakdown:

• sau = after
• giờ học = study/class time, lesson period, school hours

So sau giờ học is a general time expression meaning something like after classes or after school.

Vietnamese often uses singular-looking nouns in a general way, so giờ học does not have to mean just one specific class period.

Because Lan itself is the subject, and Vietnamese does not need a separate subject pronoun when the name is already there.

In English, we say:

• Lan usually sits...

not:

• Lan she usually sits...

Vietnamese works the same way here:

• Lan thường ngồi...

If you replaced Lan with a pronoun, then you would use one, such as cô ấy in some contexts. But with the name present, no extra pronoun is needed.

Thường means usually or often in the sense of habitual action.

In Vietnamese, adverbs of frequency commonly come before the main verb, so:

• Lan thường ngồi... = Lan usually sits...

This is different from English word order, where usually can move around more freely.

Compare:

• Lan thường học ở thư viện. = Lan usually studies at the library.
• Tôi thường đi bộ đến trường. = I usually walk to school.

So thường before ngồi is completely normal.

Ở marks location here.

• ngồi = sit
• ở một quán nhỏ = at/in a small café

So ngồi ở một quán nhỏ means sit at a small café or sit in a small café.

Vietnamese often uses ở to show where something happens:

• học ở nhà = study at home
• ăn ở quán này = eat at this restaurant
• ngồi ở đó = sit there

Sometimes in casual speech, Vietnamese may omit ở in certain expressions, but including it here is standard and clear.

Quán is a broad word for a small, informal business place, often somewhere you eat, drink, or sit.

Depending on context, it could be:

• a café
• a small restaurant
• a snack place
• a tea shop

So một quán nhỏ most naturally suggests a small café or a small little place/shop.

It is less formal and usually smaller in feel than words like nhà hàng, which means restaurant.

Yes, một literally means one, but it is also often used like a/an in English.

So:

• một quán nhỏ = a small café/shop

In many cases, Vietnamese can omit một if the noun is indefinite and the meaning is still clear. But using một here sounds natural because it introduces the place as a certain small café.

So it does not necessarily emphasize the number one. It often just marks indefiniteness.

Because adjectives usually come after nouns in Vietnamese.

So:

• quán nhỏ = small café
• nhà lớn = big house
• bài khó = difficult lesson/exercise
• cô gái đẹp = beautiful girl

This is one of the most important word-order differences from English.

Để introduces purpose. It means to, in order to, or so that.

In this sentence:

• để làm bài tập = to do homework

So Lan sits at the café for the purpose of doing homework.

A very useful pattern is:

• [action 1] + để + [action 2]
• do action 1 in order to do action 2

Examples:

• Tôi đến thư viện để học. = I go to the library to study.
• Cô ấy mua bút để viết. = She buys a pen to write.

Làm bài tập is a very common Vietnamese expression meaning do homework or do exercises.

Breakdown:

• làm = do/make
• bài tập = exercise, assignment, homework

Together, làm bài tập is the normal collocation, just like English says do homework, not make homework.

Depending on context, bài tập can mean:

• homework
• exercises
• practice assignments

So in a school context, làm bài tập is exactly what you would expect.

Vietnamese nouns usually do not have to show singular vs. plural the way English does.

So bài tập can mean:

• an exercise
• exercises
• homework

The exact meaning comes from context.

Vietnamese often leaves number unspecified unless it matters. If a speaker wants to be more specific, they can add words like:

• những bài tập = exercises, the exercises
• các bài tập = exercises
• một bài tập = one exercise

But here, plain làm bài tập is the most natural way to say do homework.

The word thường tells you that the action is habitual.

• thường = usually / often

So the sentence describes something Lan does regularly after class, not just on one occasion.

Vietnamese does not mark tense the same way English does. Instead, it often uses:

• time expressions
• adverbs
• context

to show whether something is past, present, future, or habitual.

Here, Sau giờ học plus thường makes the meaning clearly habitual.

Yes, you could, but it is not exactly the same in nuance.

• Sau giờ học = after class / after school / after study hours
• Sau khi học = after studying / after finishing studying

Sau giờ học sounds more like a routine time period in a school day. Sau khi học focuses more on the action of studying being completed.

For this sentence about a regular after-class habit, Sau giờ học sounds especially natural.

Yes, very typical. It follows a very common pattern:

• time
• subject
• frequency adverb
• verb
• location
• purpose

So:

• Sau giờ học = time
• Lan = subject
• thường = frequency
• ngồi = verb
• ở một quán nhỏ = location
• để làm bài tập = purpose

This is a useful model to copy when making your own sentences. For example:

• Buổi tối, tôi thường học ở thư viện để ôn bài.
• In the evening, I usually study at the library to review my lessons.