permit的用法和辨析

　　They were all amazed at the amazing news. 听到这个令人吃惊的消息他们感到惊讶。

　　(2)amazement n.

　　to one’s amazement令人吃惊的是

　　To my amazement, they have gone to Xishuangbanna. 让我奇怪的是，他们去西双版纳了。

　　类似短语：to one’s happiness/excitement/sadness/puzzlement 使某人高兴的/兴奋的/伤心的/迷惑的是

　　3、announce/ explain/ introduce/ declare

　　announce, explain, introduce, declare后面不接双宾语，若以人作宾语常置于to后。如：

　　The president announced to the workers the sad news.

　　The president announced the sad news to the workers.总裁向工人宣布了那不幸的消息。

　　He introduced the new comer to everyone here.他把新来的那个人介绍给这里的每个人。

　　report to sb.向某人汇报 report sth/sb.to sb.向某人汇报/告诉。

VOA: Let, Allow 和Permit的用法

　　The Verbs Let, Allow and Permit

　　The verbs "let," "allow" and "permit" are part of a group of verbs called "causatives." These verbs express how one person or thing causes something else to happen. For instance, if I said, "She let me borrow the book," the subject (she) is not the person who borrowed the book. Instead, she caused someone (me) to borrow it.

　　In a past Everyday Grammar program, we told you about the causative verbs "make," "get" and "have." Today, we will tell you about "let," "allow" and "permit" - three verbs that deal with permission.

　　These verbs are synonyms - words with very close meanings. They mean: Making causatives.

　　We will look at each verb. But let's begin by talking a little bit more about causatives. In a causative sentence, the subject does not perform the action of the main verb. Instead, the subject (a person or thing) causes the action to happen to the object (another person or thing).

　　Causative sentences start with a subject, followed by a causative verb, then an object and then the main verb. Think of it as X causing Y to do something.

　　How to use Let

　　Okay, now let's talk about "let." It is the most informal of the three verbs. Listen to some examples and make a note of which sentences are about possibility and which are about permission.

　　You will also hear that the main verbs - go, enjoy and cook - are in simple form. The simple form is the most basic form of a verb without "to" before it or "s" at the end. Have a listen:

　　I let my children go to the game every week.

　　The warm days let us enjoy the end of summer.

　　Let the vegetables cook for about 20 minutes.

　　How to use Allow

　　Now, let's look at "allow." It is more formal than "let" but less formal than "permit." You can use it in everyday situations. You may also find it in official rules, such as street, building and office signs.

　　With "allow," we use the infinitive form for main verbs. The infinitive form is "to" plus the simple form of the verb.

　　In the following examples, make a note of the meaning of "allow" in each. Which sentences are about permission? Which are about possibility? And, note the use of infinitive main verbs:

　　My teaching skills allow me to help English learners.

　　Her parents do not allow her to eat beef.

　　They do not allow us to smoke in the building.

　　You may have noted that two examples are in the negative form. When talking about rules, we often use "allow" in the negative to say what people must not do.

　　The passive form

　　Now, let's take a quick break to talk about the passive form, an important form for these verbs. The verbs "allow" and "permit" are often used in passive sentences.

　　You may remember our past programs on passive voice.

　　In a passive sentence, the subject is acted upon, or receives the action of the verb. The subject is often not mentioned in the sentence.

　　When we speak or write about official rules, we often use passive voice. Let's hear the smoking rule again, this time in the passive:

　　Smoking is not allowed in the building.

　　The person or people who made the rule are not mentioned because it is not relevant to the statement.

　　How to use Permit

　　Now, onto "permit" - the most formal of the three verbs.

　　We use it for everyday rules, such as those of a family. We also use it when talking about making things possible.