This document discusses the positioning of frequency words like always, never, usually, sometimes in sentences. It explains that frequency words usually come after forms of the verb "to be" like "is" or "are" but can also come before other verbs or at the beginning of sentences. It notes that always and never are rarely placed at the very beginning of sentences.

1. Lesson 1, Page 30
Grammar Explanation 1.14

2. 1.14 Position of Frequency Words
Examples Explanation
A dolphin’s brain is always active.
A frequency word usually comes after
the verb be.
A dolphin rarely stays under water for
more than 7 minutes
A frequency verb usually comes before
other verbs.
Sometimes a dolphin gets lost
A dolphin sometimes gets lost.
Dolphins usually swim in groups.
Usually dolphins swim in groups.
Sometimes and usually can come close
to the verb or at the beginning of the
sentence.

3. 1.14 Position of Frequency Words
Language Note
Always and never are rarely at the beginning of the sentence.
• I’m always interested in animal TV programs (NOT **Always I’m
interested …)
• Fish never live on land (NOT: **Never fish live ...)