多半的英文：
chiefly
likelihood

参考例句：

In all probability
大概,多半

I am almost certain to get the bullet.
我多半会被解雇。

There is every proBability of his coming / that he will come.
他多半会来的。

There is every proBability of his coming.
他多半会来。

More often than not the patient recovers.
病人多半能恢复健康。

It's odds-on that he'll be late.
他多半得迟到

The land was used chiefly for pasture.
这土地多半用作牧场。

The voice often falls at the end of a statement.
在陈述句的末尾，声音多半下降。

"Rain is possible, though not probable."
有可能会下雨,但多半下不了。

Greek troops at present are mostly untrained and unarmed
目前，希腊军队多半未受过训练，也未武装。

chiefly是什么意思：
adv. 首先；主要

He lives chiefly on fruit.
他以水果为主要食物。

large order of chiefly tropical liverworts.
主要为热带地钱的一个大目。

The colour of these objects was chiefly pale or sombre.
这些东西的色彩主要是黯淡,或者说灰暗。

The Government is chiefly concerned with controlling inflation.
政府的当务之急是控制通货膨胀.

I succeeded chiefly through your help.
我的成功主要是由于你的帮助。

likelihood是什么意思：
n. 可能，可能性

Up to now, it is not possible to obviate the likelihood of the earthquake.
到目前为止，还不能排除地震的可能性。

Probability is a numerical statement of the likelihood that an event will occur
概率是指某一事件发生可能性的数量陈述。

That, as we all know, is not only a possibility but a likelihood.
众所周知，那不仅可能发生，而且是很可能发生。

based on strong likelihood or firm conviction rather than actual evidence.
基于很大的可能性或者坚定的确信，而不是基于实际的证据。

This likelihood exists for that section of the student body with Right deviationist ideas
有一部分有右倾思想的学生，有此可能。