得不到的英文：
cannot get
cannot obtain

参考例句：

You will get no comradeship and no encouragement
你们得不到同志之谊，得不到鼓励。

What costs little is little esteemed.
便宜的东西得不到珍视。

We are apt to wish for what we can't have.
我们往往会祈求得不到的东西。

He who shareth honey with the bear hath the least part of it
与熊分蜜糖,得不到多少

Freedom of religious belief was not in general tolerated.
宗教信仰自由通常是得不到允许的。

You can gain nothing by merely dreaming
你光靠梦想是什么也得不到的。

They labored under the disadvantage of not having enough money.
他们苦于得不到足够的资金。

Mary was frustrated by the lack of appreciation shown of her work.
玛丽因工作得不到赏识而灰心丧气。

Knowledge will not be acquired without pain and application
不花力气,不下功夫是得不到知识的

Under the reactionary rule the people were not given the freedom of speech.
在反动统治下，人民得不到言论自由。

cannot是什么意思：
v. 不能，无法

This achievement cannot be bettered.
这一成就好得不能再好了。

If you have a bad cold you cannot taste.
如果患了重感冒，就尝不出味道。

The received wisdom is that they cannot win.
大家一致认为他们不会赢。

get是什么意思：
v. 得到；抓住；获得；受到（惩罚）；说服；到达，来；变得，变成；设法；开始
n. 幼兽；生殖

Get to the bottom of
弄个水落石出

Saving is getting
节约等于收入

It was getting dark.
天色渐暗。

obtain是什么意思：
v. 获得，流行，存在

He obtained a diploma in architecture.
他获得了建筑学的学位证书。

They obtained a loan from the government.
他们从政府那里得到一笔贷款。

The custom still obtains in districts.
这种风俗在某些地区仍然流行。