1. 表示“想象”，其后可接动名词（可以有逻辑主语），但不能接不定式。如：
She couldn't imagine living in a place like that
她无法想象住在那样一个地方。《柯林斯高阶英汉双解学习词典》
She imagined walking into the office and handing in her resignation.
她想象着自己走进办公室，递上辞呈。
Imagine earning that much money!
想想看，竟赚那么多的钱！
I can just imagine him saying that!
我确实能想到他那么说！
I can't imagine you being unfair to anyone, Leigh.
利，我想象不出你会对谁不公正。
《柯林斯高阶英汉双解学习词典》
It's difficult to imagine anything coming between them
很难想象会有什么事能使他们反目。
《柯林斯高阶英汉双解学习词典》
She could imagine her husband giving a speech in front of those delegates.
她能想象出丈夫在那些代表面前发言的样子。
Try to imagine being on the moon. 设法想象你是在月球上。
I can’t imagine my mother approving. 我不能想象我母亲也赞成。
注意，imagine 后不接不定式或不定式的复合结构，但有时可接带不定式 to be 的复合结构（to be 有时可省略或换成as）。如：
I was surprised when I saw the farm. I had imagined it to be much bigger. 我看到那个农场时很吃惊，我原认为会它会大得多。
I had imagined him (to be, as) an old man. 我原认为他是位老人。
I had imagined her to be older than that.
我本来以为她的年龄还要大一些。
He always imagined himself as a real painter.
他过去总把自己想象成一名真正的画家。
2. 表示“想”“认为”，后接 that 从句时，若从句为否定，通常将其否定转移到主句上。如：
I don’t imagine that he will come. 我想他不会来的。
但是，这4个例句却不用否定转移，因为不是以that引导的 从句：
I couldn't imagine why he would want to be alone with me
我想象不出为什么他会想和我独处。
《柯林斯高阶英汉双解学习词典》
He couldn't imagine why he had let so much time pass without contacting her
他想不通自己为什么过了那么长时间还没有和她联系。
《柯林斯高阶英汉双解学习词典》
You can't begin to imagine how much that saddens me.
你都无从想象这让我有多悲伤。
《柯林斯高阶英汉双解学习词典》
You can hardly imagine what a hard time your mother had when she was a child.
*妈小时候别提有多苦了。
《汉英大词典》
在简略说法中可用 so, not 代替 that 从句。如：
A：Will he come? 他会来吗?
B：I imagine so (not). 我想会来（不会来了）。
'Was he meeting someone?' — 'I imagine so.'
“他在和谁约会吗？”——“我猜是的。”《柯林斯高阶英汉双解学习词典》
I imagine you're referring to Jean-Paul Sartre
我猜你说的是让－保罗·萨特。
最后再分享2个例子：第一个是宾语从句里再套宾语从句；第二个例子，在某人的脑海里的英语表达法：
I imagine he thought you were better-placed than most to know the truth
我想他认为你所处的位置使你比大多数人都更了解真相。
《柯林斯高阶英汉双解学习词典》
In his mind's eye, he can imagine the effect he's having.
他能在脑海里想象出将会达到的效果。
《柯林斯高阶英汉双解学习词典》
