5. worth，worthy

(1) worth adj. 价值……的 a car worth $20000 价值2万美元的一辆小汽车 How much is this bicycle worth? It's worth ￡50. be worth doing 值得一做 It isn't worth waiting for him. (值得……的)

(2) worthy adj. 有价值的；配得上的；可尊敬的(常作表语，其后常跟被动语态动词不定式或of加名词或被动语态动名词)值得……的；应该……的

a worthy life 有价值的生活

a worthy man 高尚的人

a man worthy of praise (to be praised) 值得称赞的人

acts worthy of punishment 应该受处分的行为

She says she helps only the worthy poor. 她说她只帮助那些值得她去帮助的穷人(不包括那些她认为好吃懒做等不配取得帮助的人)。

4. combine, connect, join, unite

此组动词意为“联合、连接”。

(1) combine 意为“结合、联合”，指为了某一目的而把两事物结合在一起。We must combine theory with practice. 我们必须把理论和实践联系起来。

(2) connect “连接”，指用东西把两事物连接在一起，或两事物直接相连，二者仍保持原状。The two cities are connected by a railway. 两座城市由铁路相连。

(3) join 意为“连接”，指以线、绳、桥等把两物或两地连接在一起，和 connect 意思相近，也可指两物互相紧密相接。We had better join the island to the mainland with a steel bridge. 我们最好建一座钢筋桥把这个岛与大陆连接起来。/ Where does this stream join the Changiiang River? 这条河和长江在哪里汇合?

(4) unite 意为“联合”，指两种以上的事物结合为一体，有合二为一的意味，强调结合后的统一性。The two companies will unite into one. 这两家公司将合并成一家。/ The whole family united to help him. 全家齐心协力帮助他。

3. announce, declare

这两个词都含有“宣布”的意思。其区别主要是：

announce 所宣布的是公众较感兴趣的事情，常带有“预告”的意思

declare 一般用于较为正式的场合，特别是用于官方场合。例如：It has been announced that they will be married next week. 据宣布，他们将在下周结婚。The price of rice was announced in the papers. 大米的价格已在报上公布。declare war 宣战 declare peace 宣布和平 The arrested man declared himself (to be) innocent. 被逮捕的人声称自己是无罪的。

declare 还有一个重要的意思是“申报 (纳税品、房地产等)，例如：Do you have anything to declare? 你有什么要申报纳税的吗?

2. pay back, pay off, pay for

pay back是“偿还，报复，报答”的意思

pay off是除“还清”的意思外，常用的意思还有“有报酬”

pay for是“付……款”的意思。

How can I pay you back for all your kindness? 你的这番好意我该怎么报答呢? / Soon they paid off the loan. 不久他们把贷款还清了。/ His hard work paid off when he got the promotion. 他得到了提升，他的努力没有白费。/ Do you have to pay for your schooling? 你上学要付学费吗?

1. now that, due to, because of, owing to

(1) now that 作“既然”讲时，相当于since。now that中的that可省去。Now (that) you are well again, you can travel. 你既然恢复了健康，就能够旅行了。

(2) due to 作“起因于、归功于”时，常作表语或跟在名词后。Mistakes due to carelessness may have serious results.粗枝大叶造成的错误可能带来严重后果。/ The team's success was largely due to her efforts. 该队的成功在很大程度上是由于她的努力。

(3) because of “由于、因为”，在句中作状语或表语。His anger is because of your bad deeds. 他是因你的失礼行为而生气。

(4) owing to “由于、因为”，常在现代英语中与because of，due to换用。Owing to unfavorable weather, I was unable to carry on with it. 由于天气不好，我不能把它进行下去。

7. First come, first ____.

☆词语比较☆

6. The school building is limited, so we have no ____ room to hold this meeting.

5. How I ____him the pleasures he had during the vacation!

4. After all the students had taken their seats, the teacher ____ out the examination papers.

3. I ____ to stay there for one more week, but I changed my mind.