GUIDE深度 · Deep dive
Tenses and Subject-Verb Agreement
For grammar fill-ins, find the time signal first: every day takes present simple, yesterday takes past simple, and already/just often take perfect. Then check the subject: third-person singular verbs add -s/-es.
Time signals
every day/usually -> present simple.
yesterday/last week -> past simple.
already/just/since -> present perfect.
Agreement
He/She/It/Tom take verbs with -s.
has + past participle; was/were depends on the subject.
FAQ
Past of read?
read; spelling is the same, pronunciation changes.
Third-person plural?
Use the base verb, no -s.