1、What was exceptional about the two men's stay on the desert island?

Most of us have formed an unrealistic picture of life on a desert island.

form an unrealistic picture of sth 对…抱有不切实际的幻想

-- A large number of people have formed an unrealistic picture of the job. Form(v.形成, 构成)

=develop(vt.逐渐形成)

-- develop a habit=form a habit 养成一种习惯

2、We sometimes imagine a desert island to be a sort of paradise where the sun always shines.

imagine sth to be=imagine sth as

-- Some people imagine flying to be more dangerous than traveling by train.

-- A large number people imagine the USA as their paradise.

谓语动词 wish 之后的宾语从句中要使用虚拟语气

1>如果表达与现在情况相反, that 从句中的动词要用过去时(be 动词要用 were)。

-- I wish you could drive a car.=I am sorry you can’t drive a car.

所表达的意思是：你要是能开车就好了。(表达一种遗憾的心情)

2>如果表达与过去情况相反, that 从句中的动词要用过去完成时。

-- I wish I hadn't spent so much money.=I am sorry I spend so mu