"What if your order has been shipped" is not a sentence.
"If your order has been shipped" is a subordinate clause, so the original phrase has no predicate. You have to complete the sentence. For example:
What should I do if your order has been shipped?
What will happen if your order has been shipped?
What is the problem if your order has been shipped?
In ordinary conversation, a native English speaker will probably understand what you mean by "What if your order has been shipped" from the context in which it is said. But it is not a real sentence.
No, that sentence is not correct. That sentence should be: If you have been in love for 6 years.
Being able is the correct version of the sentence. You can use it as a fragment of any sentence.
Yes, "How long have you been living in Oxford?" is a good sentence.
The use of the word in the sentence you quote is in the sense of having been perceived as being rude to an elder. So yes, the sentence is correct.
No. The correct way is: I've understood you all along.
Later today I will ascertain whether my order has been shipped yet.
IT MEANS IT HAS BEEN SHIPPED
No - the sentence 'Had never been experience' is not a correct sentence.
Amazon typically charges for an order before it is shipped.
Amazon typically charges you for your order before it is shipped.
No, that sentence is not correct. That sentence should be: If you have been in love for 6 years.
The correct sentence would be "He could not have been there". This is because 'can' is in the present tense and doesn't agree with the rest of the sentence.
Being able is the correct version of the sentence. You can use it as a fragment of any sentence.
The correct sentence is: "Have you ever traveled before?"
As an Amazon seller, you can cancel an order before it has been shipped to the customer. You can do this by going to your seller account, locating the order, and selecting the option to cancel it. However, once the order has been shipped, you will need to contact the customer directly to arrange a return or refund.
A central fund for EGMM has been opened.
Yes, "How long have you been living in Oxford?" is a good sentence.