Learn English – in lunchtime or at lunchtime

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How say correctly?

I want buy a micro usb type b connector in lunchtime.
I want buy a micro usb type b connector at lunchtime.

Best Answer

At is better.

Examples:

He visited his friend at lunchtime. He spoke to her at dinner. They laughed together about it at breakfast.

Using during would be better than in.

Related Solutions

Learn English – Question about the Possessive with Multiple Parties

Just technically thinking, the possible option to avoid pitfalls could be:

You are welcome to use me-and-Susan's widget

Okay, protocol gone, fpp before others, but it works.
Hyphenate to disambiguate: the widget is joint property.
Now that there's just a compound noun, just one possessive should do.

There can be other, better ways to do it.

Learn English – Should I say “metal” or “metals” when I’m talking about multiple units of the same type of metal

I think you are correct, both semantically and in common usage. A useful retort to your wife's line of reasoning would be that no one would say "I am willing to exchange tickets for monies," even if the monetary exchange included different denominations, both bills and coins, or even several different types of currency.

A more academic argument would be that "metal" can already refer collectively to several types of metal.

OED b.1.b The constituent matter of a metal or of metals collectively; metallic substance.

This, combined with the previous example of how "money" is used collectively, I think more than justifies your usage.

On the other hand, referring to it as "metals" is not incorrect, and possesses as certain charm (as in how British English often sounds to Americans).