He was compelled by illness to suspend his experiment.

因病暂时中断实验。

I feel constrained to write and ask for your forgiveness.

我写信请你原谅。

The explorers had to undergo much suffering.

探险者忍受很多困苦。

They had to thread through the narrow passages.

们穿过狭窄的通道。

She has to face the brutal reality.

她面对冷酷的现实。

We have to alter the house into a barn.

我们把房子改建成谷。

He had to fight back tears of frustration.

强忍住失意的泪水。

We have to harry him for money.

我们常常要钱。

I had to walk very fast to overtake you.

我快走才能赶过你。

United will be forced to make several positional changes.

联队将做一些位置变化。

I had to concede that I'd overreacted.

我承认我反应过度了。

We had to abandon our abortive attempts.

我们的尝试没有成功，放弃。

When her husband died she had to become the breadwinner.

她丈夫死后，她赚钱养家。

Doctors are having to cope with an everexpanding workload.

医生应付日益增加的工作量。

I had to run away from my creditor whom I made a usurious loan.

我借了高利贷四处躲债。

They will have to block up the entrance to the tunnel.

们将封闭通往隧道的入口。

Adverse circumstances compelled him to close his business.

生意景气,迫使停业。

I have to blush to admit that thing.

我羞愧地承认了那件事。

I am sorry to have to inflict my company upon you.

对起, 我打扰你一下。

He had to look after his invalid brother.

照看有病的弟弟。