3）He will be back, I’m sure.
4）If he is your best friend, he would help you.
參考答案:
1）I have never dreamed about it.
Never have I dreamed about it.
2）She was so angry that she could not speak.
So angry was she that she could not speak.
3）He will be back, I’m sure.
He will, I’m sure, be back.
4）If he is your best friend, he would help you.
Were he your best friend, he would help you.