mas94010 said:
1. What are some rules for using "do you/are you"?
2. How does using either one effect the conjugation of the rest of the sentence?
A. Simple Present – Aspect of General Time
‘Do’ is used as an auxiliary verb followed by the base form (=infinitive without ‘to’ of a full verb) in interrogative, negative or negative-interrogative structures, referring to a permanent state of affairs or to an activity that happens from time to time or repeatedly, but not necessarily at this very moment.
General questions:
a)
Do you like tea?
Does she like reading?
Does he get up early?
Do you know Dave?
Do you speak Spanish?
Do the children go to bed early?
b) In questions introduced by ‘do’ or ‘does’, you can also use adverbs of frequency*:
Do you often go to the cinema?
Do you sometimes read the paper/watch TV/write letters, etc.?
Does she always get up so early?
*some adverbs of frequency: never, rarely, seldom, sometimes, often, usually, generally, always
c) You can use the simple present in questions beginning with question words:
How often do you go to the cinema?
What do you do? (= What’s your occupation?)
What does the word ‘acronym’ mean?
How do you do?
What time do the children go to bed?
Where does Ms Watson have lunch?
B. Present Continuous = Present Progressive = Real Present
The construction ‘are you’ followed by the present participle (= the –ing form of a verb) is normally used:
a) to refer to an activity that is happening precisely at this moment:
Are you talking to me or to Jane?
or:
Q: What are you doing?
A: I’m watching TV.)
Q: Who(m) are you asking? Me or Jane?
A: I’m asking Jane.
Q: What is he saying?
A: He’s saying that you’re late again.
Q: What are you talking about?
A: I’m talking about the progressive aspect.
b) when you wish to suggest that an activity is taking place temporarily, even if not at this very moment:
Q: Who is she staying with?
A: She’s staying with a friend for a couple of days.
Q: What’s Julia playing this season?
A: She’s playing tennis for a change.
Q: What are you studying?
A: I’m studying Spanish.
c) You can also use the present progressive for future events if they are the result of something already definitely arranged:
Q: Are you coming tomorrow?
A: No, I’m not. Tomorrow, I’m flying to London.
Q: Are you staying at home tonight?
A: No, I’m going out.

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