一、从方框中选择适当的词并用其正确形式填空。
meeting line serious train difficult
1. —Are you kidding?
—No, I'm telling the truth!
2. We had a class to discuss the school trip yesterday.
3. Many students have understanding this maths problem.
4. Please stand in a straight for the morning exercises.
5. Service dogs need special to help the blind people.

1. seriously 2. meeting 3. difficulty 4. line 5. training

1. 修饰动词telling用副词，serious的副词是seriously，意为“严肃地”。
2. class meeting是固定搭配，意为“班会”。
3. have difficulty (in) doing sth.是固定用法，意为“做某事有困难”，difficult的名词是difficulty。
4. stand in a straight line是固定搭配，意为“站成一条直线”。
5. need sth. to do sth.中sth.用名词，train的名词是training，意为“训练”。

二、用括号内所给词的正确形式填空。
1. I (not come) if he doesn't call me.
2. If it (not rain) tomorrow, they ______ (go) fishing.
3. She ( get ) good grades if she ______ (study) hard.
4. If he (not free) tomorrow, he ______ (not come) to your birthday party.
5. What (happen) if he ______ (arrive) late for school?

1. won't come
2. doesn't rain; will go
3. will get; studies
4. isn't free; won't come
5. will happen; arrives

1. 此句为if引导的条件状语从句，遵循“主将从现”原则，从句用一般现在时，主句用一般将来时，否定形式在will后加not，缩写为won't，故填won't come。
2. 同样遵循“主将从现”，从句主语it是第三人称单数，否定借助doesn't，动词用原形rain；主句用will+动词原形go，故填doesn't rain; will go。
3. 条件状语从句，从句主语she是第三人称单数，谓语动词用studies；主句用will get，故填will get; studies。
4. 从句“he (not free)”中free是形容词，需用be动词，主语he，be动词用is，否定为isn't free；主句用will的否定won't come，故填isn't free; won't come。
5. 遵循“主将从现”，主句用will happen；从句主语he是第三人称单数，谓语动词用arrives，故填will happen; arrives。

三、根据汉语意思翻译下列句子,每空一词。
1. 如果你打电话联系不到他,试着发短信。
If you can't reach him , try .
2. 昨天小男孩答应他妈妈会为他的功课制订一个计划。
The little boy his mother he would for his lessons yesterday.
3. 李文浩给他奶奶写了封信,并在她生日那天给她买了一份礼物。
Li Whenhao his grandma and bought her a gift on her birthday.
4. 电话响了,我立马接了起来。
The phone is ringing, and I answer it .
5. 如果你想到一个好的见面地点,请给我打电话吧。
If you think of , please give me .

1. by; phone; texting
2. promised; make; a; plan
3. wrote; a; letter
4. right; away
5. a; good; place; to; meet; a; call

1. “通过电话” 翻译为 “by phone”，“发短信” 是 “text”，try doing sth. 尝试做某事，所以填 “by; phone; texting”。
2. “答应” 用 “promise”，根据 “yesterday” 可知用过去式 “promised”，“制订一个计划” 是 “make a plan”。
3. “给某人写信” 是 “write to sb.”，根据 “bought” 可知用过去式 “wrote; a; letter”。
4. “立刻” 翻译为 “right; away”。
5. “一个好的见面地点” 是 “a; good; place; to; meet”，“给某人打电话” 是 “give sb. a call”。

四、用 if 引导的条件状语从句改写下列句子。
1. Study hard, and you will pass the exam easily.
2. Get up early, or you will be late.
3. Fish will die without water.
4. With your help, I will finish the task soon.
5. He wants to join the art club. He needs to call Mr Green.

1. If you study hard, you will pass the exam easily.
2. If you don't get up early, you will be late.
3. If there is no water, fish will die.
4. If you help me, I will finish the task soon.
5. If he wants to join the art club, he needs to call Mr Green.