Past Simple vs Present Perfect
PAST / EXPERIENCE
I finished my assignment yesterday.Past Simple · specific finished time
I have finished my assignment.Present Perfect · result relevant now
I have never used a Linux server.Experience
Past Simple: Use it with a finished, specific past time such as yesterday, last week, or at 8 PM.
Present Perfect: have/has + V3. Use it for experience or a past action connected to now when no specific finished time is stated.
Important: Do not combine Present Perfect with a finished-time expression: “I finished it yesterday,” not “I have finished it yesterday.”
JUST / ALREADY / YET / STILL
TIME WORDS
I've just finished.baru saja
I've already finished.sudah
I haven't finished yet.belum sampai sekarang
I'm still studying.masih
Just: a short time ago. Already: earlier than expected / sudah.
Yet: commonly used in negatives and questions to mean “up to now”. Still: something continues.
Note: “I still haven't finished” and “I haven't finished yet” are both natural. Avoid unnecessary “still ... yet” in a simple sentence.
WILL vs GOING TO
FUTURE
I'll help you.spontaneous decision / willingness
I'm going to study tonight.plan / intention
I think it will rain.opinion / prediction
Look at those clouds. It's going to rain.evidence-based prediction
Forms: will + V1; am/is/are going to + V1. These are common tendencies, not rigid rules.
CAN
MODAL VERB
I can configure this router.ability
I can't configure it yet.negative · can't + V1
Can you help me?question · Can + subject + V1
After a modal verb such as can, use the base verb: can configure, not can configuring / can to configure.
IT / IT'S / ITS
PRONOUN
It still works.it = pronoun / subject
It's a powerful server.it's = it is
It's been a long day.it's = it has
The server has its own firewall.its = possessive
Test “it's” by expanding it to “it is” or “it has”. If neither works, you may need “its” or “it”.
Dummy subject: “It is raining” and “It is difficult to learn English.”
THERE IS / THERE ARE
EXISTENCE
There is a server.singular
There are two routers.plural
There isn't a switch.singular negative
There aren't any switches.plural negative
Are there any servers?plural question
“It is a router” identifies or points to something. “There is a router” introduces its existence.
SOME vs ANY
QUANTIFIERS
There are some routers.positive statement
Are there any routers?general question
There aren't any routers.negative
Can you give me some advice?request
Both some and any can be used with plural countable nouns and uncountable nouns. The choice is not determined by countability alone.
Common pattern: some in positive statements; any in general questions and negatives.
Exception: some is common in offers and requests: “Would you like some coffee?” / “Can I have some water?”
Uncountable examples: some advice, some information, some help. Say “a piece of advice,” not “an advice.”
Word Forms
WORD BUILDING
carefuladjective · Be careful.
carefullyadverb · Configure it carefully.
confident / confidenceadjective / noun
maintain / maintenanceverb / noun
Learn a word together with its part of speech and a short example, not only its Indonesian meaning.