The Grammaring Guide to English Grammar with Exercises

Revision questions: present time

Can we use the auxiliary do in the present simple tense in affirmative sentences?

What is the difference in meaning between the following sentences? He always speaks very loudly.

He is always speaking very loudly.

What is the difference in meaning between the following sentences? I work as a waiter.

I am working as a waiter.

Can action verbs be used in the present simple tense?

Is this sentence correct: What are you thinking about his plans?

What is the difference in meaning between the following sentences? He wrote ten novels.

He has written ten novels.

What do we mean by an incomplete period of time?

Can we use the past simple for an action happening in an incomplete period of time?

Which tense is used with the time expression just now?

What is the difference in meaning between the following sentences? I have called him today.

I've been calling him all day.