184. 中文：他去年离开家我就一直没有见过他。(误)He left home last year and I did not see him since.

(正)He left home last year and I haven\'t seen him since.(since后面省去的是he left home last year，前面的句子要用完成时。)

183..中文：从战争开始时他就一直在那里工作。(误)He has worked there since the war has begun.

(正)He has worked there since the war began.(since引导的从句表示过去的某时间点，应用一般过去时。)

182. We found ___A____ necessary to protect the environment. A. it　 B. this　 C. that　 D. what

[考点] “主语+find+ it +adj. + to do sth”为一常用句型，意为“某人发现做某事……”，其中it为形式宾语(此时不可用this/that/one等代词替换)，真实的宾语为后置的不定式短语。

181. Be careful! The water is too hot. You'd better ___C___ it right now. A. do not drink B. not to drink　C. not drink D. not drinking 　[考点] You'd better 为You had better的缩略式。sb had better (not) do sth为一常用句型，意为“某人最好(不)去做某事”，请大家务必关注其否定结构。

180.________ China isn't rich now, ________we're working hard to make her richer and stronger(B)

A. Though; but　 B. Though; /　C. Both; and　 D. Because; so

so(因此; 所以)为并列连词，表示结果；because(因为)为从属连词，表示原因，但这对因果连词在句中不可同时并用。but(可是)也为并列连词，表示转折，与之对应的从属连词though/although (虽然)表示让步，它们也不可在句中同时使用。

179. The new hospital ___ D ___ is near the factory.　A. build B. builds C. to build D. to be built当不定式的逻辑主语是不定式所表示的动作的承受者(宾语)时，用动词不定式的被动式，即：to be +过去分词；如果不定式所表示的动作发生在谓语动词表示的动作之前，不定式用完成式，即：to have +过去分词；如果不定式表示的动作和谓语动词表示的动作同时发生，用不定式的进行式，即：to be +现在分词

178. . The panda is so fat that it can't go through the hole.(改为意思相同的句子)

The hole ______ ______ ______ ______ such a fat panda to go through.( is， too， small， for)

＂too +形容词/副词(for sb)to do…＂(太……而不能……)和＂enough (for sb) to do…＂(足以、足够……做……)结构中，不定式作结果状语。

177.　 My mother was very glad __A____ her old friend.A. to meet B. meet C. met D. meets

＂be +形容词+ to do sth＂结构中的不定式作状语，常表示原因或方式。

176.It's very nice _________ you to get me two tickets _________ the World Cup.(B)

A. for， of B. of， for C. to， for D. of， to

175. Today the forests have almost gone. People must ___C____ down too many trees. A. stop from cutting　　B. stop to cut C. be stopped from cutting　D. be stopped to cut