Helping Hints for the Present
Auxiliary Verbs Used with Present Tenses
Knowledge of auxiliary verbs used in various tenses is the key to correct tense conjugation. Here is a review of auxiliary verbs used in present tenses:
Use 'do / does' in questions and negative statements to express a routine or habitual action. Use no auxiliary verb in the positive form.
Business travelers don't fly on weekends.
How many sports venues do you visit each month?
The production center usually closes at seven o'clock.
The wholesaler usually ships his products on Mondays.
Use 'am / is / are' in the present tense for the positive, negative and question forms in the present continuous tense to express something that is happening at the current moment, or around the present moment in time.
When are you driving to the ten quick-stop markets in your franchise?
When are you shipping the grains next week?
Present Simple Passive:
Use the verb 'am / is / are' in the present for positive, negative and question in the present simple passive to express a present passive operation. Remember that the passive takes the participle form of the principal verb.
In-house accounting isn't used very often.
Is the coffee shop occupied at the moment?
Use 'have / has' in the present for the positive, negative and question forms for the present perfect tense to express something that has happened up to the present moment in time, or something which has occurred at an unspecified moment in the past.
Peter has already finished the business plan for the coffee shop.
Peter has already opened the canned food.
Present Perfect Continuous:
Use the verb 'have been / has been' in the present perfect for the positive, negative and question forms for the present perfect tense to express the duration of something that has been happening up to the present moment in time.
They've been measuring the pollution in the atmosphere for two weeks.
I've been moving my older relatives into retirement homes since last winter. That's why I attended so many funerals in May.