verb
past tense of shall
[modal verb]
a - used to say or suggest that something is the proper, reasonable, or best thing to do
b - used with have to say that something was the proper, reasonable, or best thing to do but was not done
c - used with have to say that you wish someone had seen, heard, or experienced something
used to ask for someone's opinion
used to say that something is expected or correct
a - used when saying that you feel a specified way about someone's words or behavior
b - used to emphasize what you believe, think, hope, etc.
used with have in negative statements as a polite way of thanking someone for doing something
somewhat formal - used to talk about the result or effect of something that may happen or be true
usually used with if
Brit - used to say that you would do or feel something if something specified happened; only used after I or we
Brit - used when giving someone advice; only used after I or we
Brit - used to say that you want to do or want to have something; only used after I or we
how/why should I/we know
used to say that you do not know the answer to a question and are surprised that you were asked it
what/who should you see but
used to say that you are surprised to see something or someone