Re: past tenses throughout the whole sentence

On 7月28日, 上午12时47分, Marius Hancu <Marius.Ha....@xxxxxxxxx> wrote:
On Jul 26, 8:37 am, "fyfp...@xxxxxxxxx" <fyfp...@xxxxxxxxx> wrote:

Is the following sentence correct in terms of using past tenses
throughout the entire sentence?

"If i could fly to the moon, i would send you a gift, which were
composed of many moon cakes, from the moon."

On "would", from another site, by CalifJim:

----
A flight to Mars would take more than a year. (In an imaginary world
where flights to Mars are ordinary events, a flight to Mars takes more
than a year.) [This is a different usage from the usage in the first
sentence.]

The weight of insects ... would be greater than the weight of .... (In
an imaginary world where we are able to make such measurements, the
weight of insects ... is greater than the weight of ....) [Same usage
as in the second sentence.]

He would have reached New York. (In an imaginary world where certain
conditions were met, he reached New York.)

I thought you would have finished this by now. (In an imaginary world
- the imaginary world created by my thoughts - you have already
finished this.)

My paraphrases are only approximate. There is no real definition of
would. You just need to hear it and imitate it a lot before you start
to understand how to use it. A clause with would is most often
accompanied by an if clause that reveals more about the imaginary
world we are in by expressing a condition.
------

Marius Hancu

How about:

"If you happened to come to my town, please call me at this number."

The first part of this sentence is in past tense, the second part in
present tense.
.

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