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The simple present entails that an action in the present is regularly occurring never or several times. It can also be used for actions that happen one action after another and for actions that are determined by a timetable or schedule. It also articulates facts in the present.
Meanwhile, the present perfect progressive articulates an action that has stopped recently or is still happening. It highlights the duration or course of the action.
Use of Present Perfect Progressive:
• Lays emphasis on the time frame or course of an action (not the result)
She has been sleeping for two hours.
• Used for action that stopped recently or is still happening
Example: I have been working here since 2004.
• A Finished action that affects the present
I have been reading all afternoon.
Both tenses can express that an action began in the past and is still taking place or has just finished. In several situations, both forms are correct, but there is a difference in meaning most times.
You should know that native speakers usually prefer the present perfect to the perfect progressive because it is shorter. However, when they want to emphasize that an action will carry on into the future, they will use the present perfect progressive. For example, native speakers would likely say: “I have lived in Austria for five years” then they would say “I have been living in Austria for five years."
However, there are exceptions to the use of these tenses.
Exceptions for the Simple present when adding 's':
• The verbs “can," “might," “may," must stay the same in all forms. Do not add 's' under any circumstance.
he can, it must, she may.
• For verbs that will end in ‘o’ or ‘a’ sibilant (sh, ch, s, z), add es.
wash - she washes do - he does,
• The letter y as the last letter after a consonant is replaced with i.e.,. (but: not after a vowel)
worry - he worries
but: play - he plays
Exemptions for Present perfect progressive when adding ‘ing’ include:
• Silent e as a final letter is taken down. (does not apply for -ee)
come - coming
agree - agreeing
• After a short, emphasized vowel, the last consonant is doubled.
sit - sitting
• l as the last letter after a single vowel is repeated in British English (but not in American English).
travel - traveling
• i.e., at the end of a word becomes y.
lie – lying