把下面的状语从句改为不定式短语

He was very happy when he saw us so happy．

把下面的状语从句改为不定式短语

The mother was pleased when she saw her son doing so well at school．

把下面的状语从句改为不定式短语

I'm glad I have seen your mother．

把下面的状语从句改为不定式短语

She was excited when she heard the news．

把下面的定语从句和同位语从句改为不定式短语

The commander gave orders that we should cross the river．

把下面的定语从句和同位语从句改为不定式短语

They signed an agreement that they should expand the trade between the two countries．

把下面的定语从句和同位语从句改为不定式短语

At the end of the speech he expressed the desire that he should come and work in China someday．

把下面的定语从句和同位语从句改为不定式短语

Before the machines leave the factory, there is a series of tests that must be passed．

把下面的定语从句和同位语从句改为不定式短语

There are still a lot of difficulties we have to overcome．

句型转换

When you're in trouble, you can ask your teacher for help．

When you're in trouble; you can ________　________ your teacher for help．