期中考试结束，同学们对语法的练习要由单独语法知识的专项练习转向语法综合练习了。每年的语法题型重点语法点是时态语态、非谓语和从句，其他语法点包括形容词、介词、连词、代词和词性转换等。
同学们在接下来的复习中，关注重点语法项目，兼顾其它项目，这次不考不等于不是重点！！下面是海淀区刚结束的期中考试题中的语法填空题
阅读下列短文，根据短文内容填空。在未给提示词的空白处仅填写1个适当的单词，在给出提示词的空白处用括号内所给词的正确形式填空。
A
I was lucky enough to attend the sixth UN Economic and Social Council Youth Forum, (21) ______ was held in New York in January. At the opening ceremony, I was so impressed after meeting more than 500 fellow young people from over 200 countries and regions. I felt things I used to worry about, such as my exams or performance at school, were so small (22) ______ (compare) to the global problems they were trying to solve. (23) ______ young people, we should focus more on major problems, like poverty, environmental problems and healthcare facing all human beings.
B
A BBC film crew was working on the remote Lord Howe Island for a new wildlife documentary called Drowning in Plastic. They filmed many birds that (24) ______ (die) for no clear reason. After some research, they found out the truth—(25) ______ caused the death of the birds was that their stomachs were literally too full of plastic. The documentary team also filmed biologists (26) ______ (work) on the island to save the birds. The scientists captured hundreds of chicks and removed plastic from their stomachs to give them a chance of (27) ______ (survive).
C
You never get a second chance to make a first impression, which may sound like an unusual piece of advice, (28) ______ it is true. So how do you make a good first impression? The most important tool is your face. Smiling, being responsive, and looking like you are happy almost always leave a positive impression on people. Furthermore, being in a positive mood (29) ______ (help) you to get a better understanding of new things. This means that you can possibly be (30) ______ (friendly) to people you do not know and be more creative and able to solve problems more quickly.
答案：
21 .which ---定语从句-- which
22. compared--- 非谓语—过去分词
23 .As ---介词
24. had died / died ---时态—过去/过去完成
25 . what ---名词性从句— what
26. working---非谓语—现在分词
27. survival / surviving--- 词性变化—动->名（介宾）
28 . but / yet---连词
29. helps--- 时态—一般现在时，主谓一致
30 . more friendly / friendlier---形容词副词—比较级
难点分析：
1.I felt things I used to worry about, such as my exams or performance at school, were so small （22）—— (compare) to the global problems they were trying to solve.
这道题的难点在于整个句子成分的分析。去掉定语从句和比较状语，主句是I felt things were so small .
I used to worry about, such as my exams or performance at school,作things 的定语。 (compare) to the global problems they were trying to solve.作比较状语，用非谓语形式。整句变为
I felt things I used to worry about, such as my exams or performance at school, were so small compared to the global problems they were trying to solve.
2.This means that you can possibly be 30 _____(friendly) to people you do not know and be more creative and able to solve problems more quickly.
此题难点在于需要结合上下文， 通过and be more creativ判断出该空填比较级。
Note:在做综合题时，同学们要能判断出每个空考的是哪个知识点，然后再根据之前练过的专项练习填写正确的答案。
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