Understanding Verb Tenses and Spelling Changes

When using the present perfect tense, which words are commonly used to indicate the duration of an action?

What do adverbs of frequency like 'often' and 'never' modify?

What is the purpose of changing the spelling of a verb with 'he, she, it' in the present simple?

Which type of verbs cannot be used in continuous tenses?

'Unfinished Actions 1' refers to actions that started in the past and continue to the present. What do we often use to express 'how long'?

What do we use the present perfect tense for?

What type of verbs are often used with the present perfect tense?

How do we use adverbs of frequency with the present tense?

Why does 'cry' become 'cries' but 'play' is 'plays' in the present simple?

What type of verbs cannot be used in continuous tenses?

When using the present perfect tense, what words are commonly used to indicate the duration of an action?

What is the purpose of changing the spelling of a verb with 'he, she, it' in the present simple?

'Unfinished Actions 1' refers to actions that started in the past and continue to the present. What do we often use to express 'how long'?

What do adverbs of frequency like 'often' and 'never' modify?