176.Its very nice _________ you to get me two tickets _________ the World Cup。(B)
A。 for， of B。 of， for C。 to， for D。 of， to
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。
178。 。 The panda is so fat that it cant 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。
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
180。________ China isnt rich now， ________were 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。
181。 Be careful! The water is too hot。 Youd better ___C___ it right now。 A。 do not drink B。 not to drinkC。 not drink D。 not drinking[考点] Youd 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。
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。
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。)
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 havent 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。)
185。中文：我去看他们的时候他们在吃晚餐。(误)They had supper when I went to see them。
(正)They were having supper when I went to see them。(他们在吃晚餐是在过去我去看他们的时间某一点上正进行的动作，应用过去进行时。)
中文：她两个月前去澳洲了，她许多年前到过那里。(误)She went to Australia two months ago。 She has been there many years before。(正)She went to Australia two months ago。 She had been there many years before。(many years before是从过去的某时之前算起的，表示过去的过去，要和过去完成时连用。)