1
I wish it would rain.
To express this, sign 'wish' followed by 'rain.' You don't always need to sign 'I' first, as the context implies it. Make sure your facial expression shows a hopeful or longing look to match the desire for rain.
2
I wish I had a dog.
Sign 'wish,' then 'have,' and finally 'dog.' Keep the downward movement of 'wish' smooth and deliberate. Your face should convey how much you want the pet, adding emotional depth to the sentence.
3
Do you wish we could go?
Point to the person for 'you,' sign 'wish,' and then 'go.' Because this is a yes/no question, remember to raise your eyebrows and lean forward slightly while signing to indicate you are asking a question.