单词：first-order modal logic
单词：first-order modal logic 相关文章
For VOA Learning English, this is Everyday Grammar. This week we are going to show you how to give advice using modal verbs. Modal verbs (called modals for short) are auxiliary verbs that express a speaker's attitude and the strength of that attitude
2018年VOA慢速英语(二)月
If you asked even the most knowledgeable Americans, they probably could not tell you more than a few meanings for the word so. It is an everyday word that most people use without even realizing its complexity. But this mysterious little word can act
2018年VOA慢速英语(十)月
托福备考如何进行精听训练 考生们都知道精听很重要，可是你知道哪些托福[微博]听力材料适合精听，有效的听法是什么呢？本文中小编整理了一些信息，供各位参考。 既然叫总听，就是不要
托福英语
You Really Should Learn Modals! For VOA Learning English, this is Everyday Grammar. This week we are going to show you how to give advice using modal verbs. Modal verbs (called modals for short) are auxiliary verbs that express a speaker's attitude a
2016年VOA慢速英语(六)月
They Say That Reported Speech is Easy We often need to tell others what someone else said. There are two ways to do this. One is to say the same words and use quotation marks. That is direct speech. The other method is to summarize, or tell about wha
2016年VOA慢速英语(四)月
Modal verbs are helping verbs. We use them with main verbs to help us express ability, possibility, necessity and permission. Todays question is about a modal that is commonly confused with an expression. Heres the question, which comes from a listen
2019年VOA慢速英语(一)月